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Obnoxious

Subject; liable; exposed; answerable; amenable; -- with to.

Oboe

One of the higher wind instruments in the modern orchestra, yet of great antiquity, having a penetrating pastoral quality of tone, somewhat like the clarinet in form, but more slender, and sounded by means of a double reed; a hautboy.

Oboist

A performer on the oboe.

Obolary

Possessing only small coins; impoverished.

Obole

A weight of twelve grains; or, according to some, of ten grains, or half a scruple.

Obolo

A copper coin, used in the Ionian Islands, about one cent in value.

Obolus

A small silver coin of Athens, the sixth part of a drachma, about three cents in value. An ancient weight, the sixth part of a drachm.

Obovate

Inversely ovate; ovate with the narrow end downward; as, an obovate leaf.

Obreption

The act of creeping upon with secrecy or by surprise.

Obreptitious

Done or obtained by surprise; with secrecy, or by concealment of the truth.

Obrogate

To annul indirectly by enacting a new and contrary law, instead of by expressly abrogating or repealing the old one.

Obrok

A rent. A poll tax paid by peasants absent from their lord's estate.

Obscenity

That quality in words or things which presents what is offensive to chastity or purity of mind; obscene or impure lanquage or acts; moral impurity; lewdness; obsceneness; as, the obscenity of a speech, or a picture.

Obscurant

One who obscures; one who prevents enlightenment or hinders the progress of knowledge and wisdom.

Obscuration

The act or operation of obscuring; the state of being obscured; as, the obscuration of the moon in an eclipse.

Obscurement

The act of obscuring, or the state of being obscured; obscuration.

Obscurer

One who, or that which, obscures.

obscurity

The quality or state of being obscure.

obsecrate

To beseech; to supplicate; to implore.

obsecration

The act of obsecrating or imploring; as, the obsecrations of the Litany, being those clauses beginning with /By./

Obsecratory

Expressing, or used in, entreaty; supplicatory.

Obsequious

Promptly obedient, or submissive, to the will of another; compliant; yielding to the desires of another; devoted.

Obsequiously

In an obsequious manner; compliantly; fawningly.

Obsequy

The last duty or service to a person, rendered after his death; hence, a rite or ceremony pertaining to burial; -- now used only in the plural.

Observable

Capable of being observed; discernible; noticeable.

Observance

The act or practice of observing or noticing with attention; a heeding or keeping with care; performance; -- usually with a sense of strictness and fidelity; as, the observance of the Sabbath is general; the strict observance of duties.

Observantine

One of a branch of the Order of Franciscans, who profess to adhere more strictly than the Conventuals to the intention of the founder, especially as to poverty; -- called also Observants.

Observation

The act or the faculty of observing or taking notice; the act of seeing, or of fixing the mind upon, anything.

Observational

Of or pertaining to observation; consisting of, or containing, observations.

Observatory

A place or building for making observations on the heavenly bodies.

Observe

To take notice; to give attention to what one sees or hears; to attend.

observed

perceived with the eyes and sometimes with other senses; as, no explanation for the observed phenomena.

Observer

One who observes, or pays attention to, anything; especially, one engaged in, or trained to habits of, close and exact observation; as, an astronomical observer.

Observing

Giving particular attention; habitually attentive to what passes; observant{1}; as, an observing person; an observing mind.

obsess

To be excessively or persistently preoccupied with something; -- usually used with on or over; as, to obsess over an imagined insult.

obsessed

having or showing excessive or compulsive concern; -- used with with.

obsidian

A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.

Obsign

To seal; to confirm, as by a seal or stamp.

Obsignation

The act of sealing or ratifying; the state of being sealed or confirmed; confirmation, as by the Holy Spirit.

Obsolescent

Going out of use; becoming obsolete; passing into desuetude.

Obsolete

To become obsolete; to go out of use.

Obsoleteness

The state of being obsolete, or no longer used; a state of desuetude.

Obstacle

That which stands in the way, or opposes; anything that hinders progress; a hindrance; an obstruction, physical or moral.

Obstancy

Opposition; impediment; obstruction.

Obstetrical Obstetric

Of or pertaining to childbirth, midwifery, or the period around the time of the birth of children; as, the obstetric art.

Obstetrician

One skilled in obstetrics; an accoucheur; especially, a physician who specializes in obstetrics.

Obstetricious

Serving to assist childbirth; obstetric; hence, facilitating any bringing forth or deliverance.

Obstinacy

A fixedness in will, opinion, or resolution that can not be shaken at all, or only with great difficulty; firm and usually unreasonable adherence to an opinion, purpose, or system; unyielding disposition; stubborness; pertinacity; persistency; contumacy.

Obstinate

Pertinaciously adhering to an opinion, purpose, or course; persistent; not yielding to reason, arguments, or other means; stubborn; pertinacious; -- usually implying unreasonableness.

Obstreperous

Attended by, or making, a loud and tumultuous noise; clamorous; noisy; vociferous.

Obstriction

The state of being constrained, bound, or obliged; that which constrains or obliges; obligation; bond.

Obstringe

To constrain; to put under obligation.

Obstruction

The act of obstructing, or state of being obstructed.

Obstructionist

One who deliberately hinders progress; one who obstructs business, as in a legislative body. Of or pertaining to obstructionists; causing obstruction; as, obstructionist tactics.

Obstruent

Anything that obstructs or closes a passage; esp., that which obstructs natural passages in the body; as, a medicine which acts as an obstruent.

Obtain

To gain or have a firm footing; to be recognized or established; to become prevalent or general; to prevail; as, the custom obtains of going to the seashore in summer.

Obtainment

The act or process of obtaining; attainment.

Obtend

To oppose; to hold out in opposition.

Obtenebration

The act of darkening; the state of being darkened; darkness.

Obtestation

The act of obtesting; supplication; protestation.

Obtrude

To thrust one's self upon a company or upon attention; to intrude.

Obtrusion

The act of obtruding; a thrusting upon others by force or unsolicited; as, the obtrusion of crude opinions on the world.

Obtrusive

Disposed to obtrude; inclined to intrude or thrust one's self or one's opinions upon others, or to enter uninvited; forward; pushing; intrusive.

Obtund

To reduce the edge, pungency, or violent action of; to dull; to blunt; to deaden; to quell; as, to obtund the acrimony of the gall.

Obtundent

A substance which sheathes a part, or blunts irritation, usually some bland, oily, or mucilaginous matter; -- nearly the same as demulcent.

Obtunder

That which obtunds or blunts; especially, that which blunts sensibility.

Obturate

To stop or close, as an opening; to stop (a gun breech) so as to prevent the escape of gas in firing.

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