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Noah Webster’s 1828 Dictionary - Contents
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    ONEMENT, n. wun’ment. State of being one. [Not in use.]

    ONENESS, n. wun’ness. [from one.] Singleness in number; individuality; unity; the quality of being one.

    Our God is one, or rather very oneness.NWAD ONENESS.2

    ONERARY, a. [L. onerarius, from onus, a load; onero, to load.]

    Fitted or intended for the carriage of burdens; comprising a burden.NWAD ONERARY.2

    ONERATE, v.t. [L. onero, from onus, a burden.] To load; to burden.

    ONERATION, n. The act of loading.

    ONEROUS, a. [L. onerosus, from onus, a load.]

    1. Burdensome; oppressive.NWAD ONEROUS.2

    2. In Scots law, being for the advantage of both parties; as an onerous contract; opposed to gratuitous.NWAD ONEROUS.3

    ONION, n. un’yun.

    A plant of the genus Allium; and particularly, its bulbous root, much used as an article of food.NWAD ONION.2

    ONKOTOMY, n. [Gr. tumor, and to cut.]

    In surgery, the opening of a tumor or abscess.NWAD ONKOTOMY.2

    ONLY, a.

    1. Single; one along; as, John was the only man present.NWAD ONLY.2

    2. This and no other. This is an only child.NWAD ONLY.3

    3. This above all others. He is the only man for music.NWAD ONLY.4

    ONLY, adv.

    1. Singly; merely; barely; in one manner or for one purpose along.NWAD ONLY.6

    I purpose my thoughts only as conjectures.NWAD ONLY.7

    And to be loved himself, needs only to be known.NWAD ONLY.8

    2. This and no other wise.NWAD ONLY.9

    Every imagination of the thoughts of his heart was only evil continually. Genesis 6:5.NWAD ONLY.10

    3. Singly; without more; as only-begotten.NWAD ONLY.11

    ONOMANCY, n. [Gr. name, and divination.] Divination by the letters of a name.

    Destinies were superstitiously, by onomancy, deciphered out of names.NWAD ONOMANCY.2

    ONOMANTIC, ONOMANTICAL, a. Predicting by names, or the letters composing names.

    ONOMATOPE, ONOMATOPY, n. [Gr. name, and to make.]

    1. In grammar and rhetoric, a figure in which words are formed to resemble the sound made by the thing signified; as, to buzz, as bees; to crackle, as burning thorns or brush.NWAD ONOMATOPE.2

    2. A word whose sound corresponds to the sound of the thing signified.NWAD ONOMATOPE.3

    ONSET, n. [on and set.]

    1. A rushing or setting upon; a violent attack; assault; a storming; appropriately, the assault of an army or body of troops upon an enemy or a fort.NWAD ONSET.2

    The shout of battle now began and rushing sound of onset.NWAD ONSET.3

    2. An attack of any kind; as the impetuous onset of grief.NWAD ONSET.4

    ONSET, v.t. To assault; to begin. [Not used.]

    ONSLAUGHT, n. on’slaut. [on and slay.] Attack; storm; onset. [Not used.]

    ONTOLOGIC, ONTOLOGICAL, a. [See Ontology.] Pertaining to the science of being in general and its affections.

    ONTOLOGIST, n. One who treats of or considers the nature and qualities of being in general.

    ONTOLOGY, n. [Gr. from and discourse.]

    That part of the science of metaphysics which investigates and explains the nature and essence of all beings, their qualities and attributes.NWAD ONTOLOGY.2

    ONWARD, adv. [L. versus.]

    1. Toward the point before or in front; forward; progressively; in advance; as, to move onward.NWAD ONWARD.2

    Not one looks backward, onward still he goes.NWAD ONWARD.3

    2. In a state of advanced progression.NWAD ONWARD.4

    3. A little further or forward.NWAD ONWARD.5

    ONWARD, a.

    1. Advanced or advancing; as an onward course.NWAD ONWARD.7

    2. Increased; improved.NWAD ONWARD.8

    3. Conducting; leading forward to perfection.NWAD ONWARD.9

    ONYCHA, n. [from Gr.] Supposed to be the odoriferous shell of the onyxfish, or the onyx. Exodus 30:34.

    ONYX, n. [Gr. a nail. L. onyx.] A semi-pellucid gem with variously colored zones or veins, a variety of chalcedony.

    OOLITE, n. [Gr. an egg, and stone, from its resemblance to the roes of fish.]

    Egg-stone, a variety of concreted carbonate of lime; oviform limestone.NWAD OOLITE.2

    OOZE, v.i. ooz. [The origin of this word is not easily ascertained. Heb. See Issue.]

    To flow gently; to percolate, as a liquid through the pores of a substance, or through small openings. Water oozes from the earth and through a filter.NWAD OOZE.2

    The latent rill, scaree oozing through the grass.NWAD OOZE.3

    OOZE, n.

    1. Soft mud or slime; earth so wet as to flow gently or easily yield to pressure.NWAD OOZE.5

    2. Soft flow; spring.NWAD OOZE.6

    3. The liquor of a tan-vat.NWAD OOZE.7

    OOZING, ppr. Flowing gently; percolating.

    OOZY, a. Miry; containing soft mud; resembling ooze; as the oozy bed of a river.

    OPACATE, v.t. [L. opaco.] To shade; to darken; to obscure; to cloud. [Not used.]

    OPACITY, n. [L. opacitas.]

    1. Opakeness; the quality of a body which renders it impervious to the rays of light; want of transparency. Opacity may exist in bodies of any color.NWAD OPACITY.2

    2. Darkness; obscurity.NWAD OPACITY.3

    OPACOUS, a. [L. opacus.]

    1. Not pervious to the rays of light; not transparent.NWAD OPACOUS.2

    2. Dark; obscure. [See Opake.]NWAD OPACOUS.3

    OPACOUSNESS, n. Imperviousness to light.

    OPAH, n. A fish of a large kind with a smooth skin found on the coast of Guinea.

    OPAKE, a. [L. opacus.]

    1. Impervious to the rays of light; not transparent. [This is the word now generally used.] Chalk is an opake substance.NWAD OPAKE.2

    2. Dark; obscure.NWAD OPAKE.3

    OPAKENESS, n. The quality of being impervious to light; want of transparency; opacity.

    OPAL, n. [L. opalus or opalum.] A stone of the silicious genus, and of several varieties. It is one of the most beautiful of this genus, by reason of its changeableness of color by reflection and refraction. Kirwan distributes opals into four families, opal, semi-opal, pitch stone [pechstein,] and ligniform. Jameson divides opal into seven kinds.

    Opal is a subspecies of indivisible quartz.NWAD OPAL.2

    OPALESCENCE, n. A colored shining luster reflected from a single spot in a mineral. It is sometimes simple and sometimes stellar.

    OPALESCENT, a. Resembling opal; reflecting a colored luster from a single spot.

    OPALINE, a. Pertaining to or like opal.

    OPALIZE, v.t. To make to resemble opal; as opalized wood.

    OPAQUE. [See Opake.]

    OPAQUENESS. [See Opakeness.]

    OPE, a. Open. Obs.

    OPE, v.t. To open; used only in poetry, and probably a contracted word.

    OPEN, a. o’pn.

    1. Unclosed; not shut; as, the gate is open; an open door or window; an open book; open eyes.NWAD OPEN.2

    2. Spread; expanded. He received his son with open arms.NWAD OPEN.3

    3. Unsealed; as an open letter.NWAD OPEN.4

    4. Not shut or fast; as an open hand.NWAD OPEN.5

    5. Not covered; as the open air; an open vessel.NWAD OPEN.6

    6. Not covered with trees; clear; as an open country or field.NWAD OPEN.7

    7. Not stopped; as an open bottle.NWAD OPEN.8

    8. Not fenced or obstructed; as an open road.NWAD OPEN.9

    9. Not frosty; warmer than usual; not freezing severely; as an open winter.NWAD OPEN.10

    An open and warm winter portendeth a hot and dry summer.NWAD OPEN.11

    Johnson interprets open, in this passage, by not cloudy, not gloomy. I think the definition wrong. In America, an open winter is one in which the earth is not bound with frost and covered with snow.NWAD OPEN.12

    10. Public; before a court and its suitors. His testimony was given in open court.NWAD OPEN.13

    11. Admitting all persons without restraint; free to all comers. He keeps open house at the election.NWAD OPEN.14

    12. Clear of ice; as, the river or the harbor is open.NWAD OPEN.15

    13. Plain; apparent; evident; public; not secret or concealed; as an open declaration; open avowal; open shame; open defiance. The nations contend to open war or in open arms.NWAD OPEN.16

    14. Not wearing disguise; frank; sincere; unreserved; candid; artless.NWAD OPEN.17

    He was held a man open and of good faith.NWAD OPEN.18

    His generous, open undesigning heart.NWAD OPEN.19

    15. Not clouded; not contracted or frowning; having an air of frankness and sincerity; as an open look.NWAD OPEN.20

    With aspect open shall erect his head.NWAD OPEN.21

    16. Not hidden; exposed to view.NWAD OPEN.22

    We are to exercise our thoughts and lay open the treasures of divine truth.NWAD OPEN.23

    17. Ready to hear or receive what is offered.NWAD OPEN.24

    His ears are open to their cry. Psalm 34:15.NWAD OPEN.25

    18. Free to be employed for redress; not restrained or denied; not precluding any person.NWAD OPEN.26

    The law is open. Acts 19:38.NWAD OPEN.27

    19. Exposed; not protected; without defense. The country is open to the invaders.NWAD OPEN.28

    - Hath left me open to all injuries.NWAD OPEN.29

    20. Attentive; employed in inspection.NWAD OPEN.30

    Thine eyes are open upon all the ways of the sons of men - Jeremiah 32:19.NWAD OPEN.31

    21. Clear; unobstructed; as an open view.NWAD OPEN.32

    22. Unsettled; not balanced or closed; as an open account.NWAD OPEN.33

    Open accounts between merchants.NWAD OPEN.34

    23. Not closed; free to be debated; as a question open for discussion.NWAD OPEN.35

    24. In music, an open note is that which a string is tuned to produce.NWAD OPEN.36

    OPEN, v.t. o’pn.

    1. To unclose; to unbar; to unlock; to remove any fastening or cover and set open; as, to open a door or gate; to open a desk.NWAD OPEN.38

    2. To break the seal of a letter and unfold it.NWAD OPEN.39

    3. To separate parts that are close; as, to open the lips; to open the mouth or eyes or eyelids; to open a book.NWAD OPEN.40

    4. To remove a covering from; as, to open a pit.NWAD OPEN.41

    5. To cut through; to perforate; to lance; as, to open the skin; to open an abscess.NWAD OPEN.42

    6. To break; to divide; to split or rend; as, the earth was opened in many places by an earthquake; a rock is opened by blasting.NWAD OPEN.43

    7. To clear; to make by removing obstructions; as, to open a road; to open a passage; the heat of spring opens rivers bound with ice.NWAD OPEN.44

    8. To spread; to expand; as, to open the hand.NWAD OPEN.45

    9. To unstop; as, to open a bottle.NWAD OPEN.46

    10. To begin; to make the first exhibition. The attorney general opens the cause on the part of the king or the state. Homer opens his poem with the utmost simplicity and modesty.NWAD OPEN.47

    11. To show; to bring to view or knowledge.NWAD OPEN.48

    The English did adventure far to open the north parts of America.NWAD OPEN.49

    12. To interpret; to explain.NWAD OPEN.50

    - While he opened to us the Scriptures. Luke 24:32.NWAD OPEN.51

    13. To reveal; to disclose. He opened his mind very freely.NWAD OPEN.52

    14. To make liberal; as, to open the heart.NWAD OPEN.53

    15. To make the first discharge of artillery; as, to open a heavy fire on the enemy.NWAD OPEN.54

    16. To enter on or begin; as to open a negotiation or correspondence; to open a trade with the Indies.NWAD OPEN.55

    17. To begin to see by the removal of something intercepted the view; as, we sailed round the point and opened the harbor.NWAD OPEN.56

    OPEN, v.i. o’pn.

    1. To unclose itself; to be unclosed; to be parted.NWAD OPEN.58

    The earth opened and swallowed up Dathan, and covered the company of Abiram. Psalm 106:17.NWAD OPEN.59

    2. To begin to appear. As we sailed round the point, the harbor opened to our view.NWAD OPEN.60

    3. To commence; to begin. sales of stock open at par.NWAD OPEN.61

    4. To bark; a term in hunting.NWAD OPEN.62

    OPENED, pp. o’pned. Unclosed; unbarred; unsealed; uncovered; revealed; disclosed; made plain; freed from obstruction.

    OPENER, n. o’pner.

    1. One that opens or removed any fastening or covering.NWAD OPENER.2

    2. One that explains; an interpreter.NWAD OPENER.3

    3. That which separates; that which rends.NWAD OPENER.4

    4. An aperient in medicine.NWAD OPENER.5

    OPENEYED, a. o’pneyed. Watchful; vigilant.

    OPENHANDED, a. o’pnhanded. Generous; liberal; munificent.

    OPENHEARTED, a. o’pnharted. Candid; frank; generous.

    OPENHEARTEDLY, adv. With frankness; without reserve.

    OPENHEARTEDNESS, n. Frankness; candor; sincerity; munificence; generosity.

    OPENING, ppr. o’pning. Unclosing; unsealing; uncovering; revealing; interpreting.

    OPENING, n. o’pning.

    1. A breach; an aperture; a hole or perforation.NWAD OPENING.3

    2. A place admitting entrance; as a bay or creek.NWAD OPENING.4

    3. Dawn; first appearance or visibleness; beginning of exhibition or discovery.NWAD OPENING.5

    The opening of your glory was like that of light.NWAD OPENING.6

    OPENLY, adv. o’pnly.

    1. Publicly; not in private; without secrecy; as, to avow our sins and follies openly.NWAD OPENLY.2

    How grossly and openly do many of us contradict the precepts of the gospel by our ungodliness and worldly lusts!NWAD OPENLY.3

    2. Plainly; evidently; without reserve or disguise.NWAD OPENLY.4

    OPENMOUTHED, a. o’pnmouthed. Greedy; ravenous; clamorous; as an open-mouthed lion.

    OPENNESS, n. o’pnness.

    1. Freedom from covering or obstruction; as the openness of a country.NWAD OPENNESS.2

    2. Plainness; clearness; freedom from obscurity or ambiguity; as, deliver your answers with more openness.NWAD OPENNESS.3

    3. Freedom from disguise; unreservedness; plainness.NWAD OPENNESS.4

    4. Expression of frankness or candor; as openness of countenance.NWAD OPENNESS.5

    5. Unusual mildness; freedom from snow and frost; as the openness of a winter.NWAD OPENNESS.6

    OPERA, n. [L. opera, work, labor.]

    A dramatic composition set to music and sung on the stage, accompanied with musical instruments and enriched with magnificent dresses, machines, dancing, etc.NWAD OPERA.2

    OPERABLE, a. Practicable. [Not used.]

    OPERANT, a. [See Operate.] Having power to produce an effect. [Not used. We now use operative.]

    OPERATE, v.i. [L. operor; Heb. signifies to be strong, to prevail.]

    1. To act; to exert power or strength, physical or mechanical. External bodies operate on animals by means of perception. Sound operates upon the auditory nerves through the medium of air. Medicines operate on the body by increasing or diminishing organic action.NWAD OPERATE.2

    2. To act or produce effect on the mind; to exert moral power or influence. Motives operate on the mind in determining the judgment. Examples operate in producing imitation.NWAD OPERATE.3

    The virtues of private persons operate but on a few -NWAD OPERATE.4

    A plain convincing reason operates on the mind both of a learned and an ignorant hearer as long as he lives.NWAD OPERATE.5

    3. In surgery, to perform some manual act in a methodical manner upon a human body, and usually with instruments, with a view to restore soundness or health; as in amputation, lithotomy and the like.NWAD OPERATE.6

    4. To act; to have agency; to produce any effect.NWAD OPERATE.7

    OPERATE, v.t. To effect; to produce by agency.

    The same cause would operate a diminution of the value of stock -NWAD OPERATE.9

    [This use is not frequent, and can hardly be said to be well authorized.]NWAD OPERATE.10

    OPERATICAL, a. Pertaining to the opera; a word used by musicians.

    OPERATING, ppr. Acting; exerting agency or power; performing some manual act in surgery.

    OPERATION, n. [L. operatio.]

    1. The act or process of operating; agency; the exertion of power, physical, mechanical or moral.NWAD OPERATION.2

    Speculative painting without the assistance of manual operation, can never attain to perfection.NWAD OPERATION.3

    The pain and sickness caused by manna are the effects of its operation on the stomach.NWAD OPERATION.4

    So we speak of the operation of motives, reasons or arguments on the mind, the operation of causes, etc.NWAD OPERATION.5

    2. Action; effect.NWAD OPERATION.6

    Many medicinal drugs of rare operation.NWAD OPERATION.7

    3. Process; manipulation; series of acts in experiments; as in chimistry or metallurgy.NWAD OPERATION.8

    4. In surgery, any methodical action of the hand, or of the hand with instruments, on the human body, with a view to heal a part diseased, fractured or dislocated, as in amputation, etc.NWAD OPERATION.9

    5. Action or movements of an army or fleet; as military or naval operations.NWAD OPERATION.10

    6. Movements of machinery.NWAD OPERATION.11

    7. Movements of any physical body.NWAD OPERATION.12


    1. Having the power of acting; exerting force, physical or moral; having or exerting agency; active in the production of effects.NWAD OPERATIVE.2

    In actions of religion we should be zealous, active and operative, so far as prudence will permit.NWAD OPERATIVE.3

    It holds in all operative principles, especially in morality.NWAD OPERATIVE.4

    2. Efficacious; producing the effect.NWAD OPERATIVE.5

    OPERATOR, n.

    1. He or that which operates; he or that which produces an effect.NWAD OPERATOR.2

    2. In surgery, the person who performs some act upon the human body by means of the hand, or with instruments; as a skillful operator.NWAD OPERATOR.3

    OPERCULATE, OPERCULATED, a. [L. operculatur, from operio, to cover.] In botany, having a lid or cover, as a capsule.

    OPERCULIFORM, a. [L. operculum, a lid, and form.] Having the form of a lid or cover.

    OPEROSE, a. [L. operosus, from opera, operor.]

    Laborious; attended with labor; tedious.NWAD OPEROSE.2

    OPEROSENESS, n. the state of being laborious.

    OPETIDE, n. [ope and tide.] The ancient time of marriage, from Epiphany to Ash Wednesday.

    OPHIDIAN, a. [Gr. a serpent.] Pertaining to serpents; designating an order of vertebral animals destitute of feet or fins.

    OPHIDION, n. [Gr. a serpent.] a fish of the anguilliform kind, resembling the common eel, but shorter, more depressed and of a paler color; found in the mediterranean.

    OPHIOLOGIC, OPHIOLOGICAL, a. Pertaining to ophiology.

    OPHIOLOGIST, n. One versed in the natural history of serpents.

    OPHIOLOGY, n. [Gr. serpent, and discourse.]

    That part of natural history which treats of serpents, or which arranges and describes the several kinds.NWAD OPHIOLOGY.2

    OPHIOMANCY, n. [Gr. a serpent, and divination.]

    In antiquity, the art of divining or predicting events by serpents, as by their manner of eating or by their coils.NWAD OPHIOMANCY.2

    OPHIOMORPHOUS, a. [Gr. form.] Having the form of a serpent.

    OPHIOPHAGOUS, a. [Gr. a serpent, to eat.] Eating or feeding on serpents.

    OPHITE, n. [Gr. a serpent.] Pertaining to a serpent.

    OPHITE, a. [Gr. a serpent, whence a stone spotted like a serpent.]

    Green porphyry, or serpentine; a variety of greenstone of a dusky green color of different shades, sprinkled with spots of a lighter green; in other words, containing greenish white crystals of feldspar.NWAD OPHITE.3

    OPHIUCHUS, n. [Gr. a serpent, and to have.]

    A constellation in the northern hemisphere.NWAD OPHIUCHUS.2

    OPHITHALMIC, a. [See Ophthalmy.] Pertaining to the eye.

    OPHTHALMOSCOPY, n. [Gr. the eye, and to view.]

    A branch of physiognomy which deduces the knowledge of a man’s temper and manner from the appearance of the eyes.NWAD OPHTHALMOSCOPY.2

    OPHTHALMY, n. [Gr. from the eye.]

    A disease of the eyes; an inflammation of the membranes which invest the eye.NWAD OPHTHALMY.2

    Inflammation of the eye or its appendages.NWAD OPHTHALMY.3

    OPIATE, n. [from opium.]

    1. Primarily, a medicine of a thicker consistence than syrup, prepared with opium.NWAD OPIATE.2

    A soft electuary.NWAD OPIATE.3

    Electuaries when soft are call opiata.NWAD OPIATE.4

    But in modern usage generally,NWAD OPIATE.5

    2. Any medicine that has the quality of inducing sleep or repose; a narcotic.NWAD OPIATE.6

    3. That which induces rest or inaction; that which quiets uneasiness.NWAD OPIATE.7

    They chose atheism as an opiate.NWAD OPIATE.8

    OPIATE, a.

    1. Inducing sleep; soporiferous; somniferous; narcotic.NWAD OPIATE.10

    2. Causing rest or inaction.NWAD OPIATE.11

    OPIFCICER, n. [L. opifex; opus, work, and facio, to do.]

    One who performs any work. [Not used.]NWAD OPIFCICER.2

    OPINABLE, a. [L. opinor.] That may be thought. [Not used.]

    OPINATION, n. Act of thinking; opinion. [Not used.]

    OPINATIVE, a. Stiff in opinion. [Not used.]

    OPINATOR, n. One fond of his own opinions; one who holds an opinion. [Not in use.]

    OPINE, v.i. [L. opinor.] To think; to suppose. Obs.

    OPINED, pp. Thought; conceived. Obs.

    OPINER, n. One who thinks or holds an opinion. Obs.

    OPINIASTER, OPINIASTROUS, OPINIATRE, a. Unduly attached to one’s own opinion, or stiff in adhering to it. Obs.

    OPINIATE, v.t. To maintain one’s opinion with obstinacy. Obs.

    OPINIATED, a. Unduly attached to one’s own opinions.

    OPINIATER, a. Stiff in opinion; obstinate. Obs.


    1. Very stiff in adherence to preconceived notions.NWAD OPINIATIVE.2

    2. Imagined; not proved.NWAD OPINIATIVE.3

    OPINIATIVENESS, n. Undue stiffness in opinion.

    OPINIATOR, n. One unduly attached to his own opinion. Obs.

    OPINIATRY, n. Unreasonable attachment to one’s own notions; obstinacy in opinions. Obs.

    OPINING, ppr. Thinking. Obs.

    OPINING, n. Opinion; notion. Obs.

    OPINION, n. opin’yon. [L. opinio, from opinor, to thing, Gr., L. suppono.]

    1. The judgment which the mind forms of any proposition, statement, theory or event, the truth or falsehood of which is supported by a degree of evidence that renders it probably, but does not produce absolute knowledge or certainty. It has been a received opinion that all matter is comprised in four elements. This opinion is proved by many discoveries to be false. From circumstances we form opinions respecting future events.NWAD OPINION.2

    Opinion is when the assent of the understanding is so far gained by evidence of probability, that it rather inclines to one persuasion than to another, yet not without a mixture of uncertainty or doubting.NWAD OPINION.3

    2. The judgment or sentiments which the mind forms of persons or their qualities. We speak of a good opinion, a favorable opinion, a bad opinion, a private opinion, and public or general opinion, etc.NWAD OPINION.4

    Friendship gives a man a peculiar right and claim to the good opinion of his friend.NWAD OPINION.5

    3. Settled judgment or persuasion; as religious opinions; political opinion.NWAD OPINION.6

    4. Favorable judgment; estimation.NWAD OPINION.7

    In actions of arms, small matters are of great moment, especially when they serve to raise an opinion of commanders.NWAD OPINION.8

    However, I have no opinion of these things -NWAD OPINION.9

    OPINION, v.t. To think. [Not used.]

    OPINIONATE, OPINIONATED, a. Stiff in opinion; firmly or unduly adhering to one’s own opinion; obstinate in opinion.

    OPINIONATELY, adv. Obstinately; conceitedly.

    OPINIONATIVE, a. Fond of preconceived notions; unduly attached to one’s own opinions.

    OPINIONATIVELY, adv. With undue fondness for one’s own opinions; stubbornly.

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