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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.

Obturation

The act of stopping up, or closing, an opening.

Obturator

Serving as an obturator; closing an opening; pertaining to, or in the region of, the obturator foramen; as, the obturator nerve.

Obtuse

Not pointed or acute; blunt; -- applied esp. to angles greater than a right angle, or containing more than ninety degrees.

Obtusion

The act or process of making obtuse or blunt.

Obumbrant

Overhanging; as, obumbrant feathers.

Obuncous

Hooked or crooked in an extreme degree.

Obvention

The act of happening incidentally; that which happens casually; an incidental advantage; an occasional offering.

Obverse

The face of a coin which has the principal image or inscription upon it; -- the other side being the reverse.

Obversion

The act of turning toward or downward.

Obviation

The act of obviating, or the state of being obviated.

Obvoluted Obvolute

Overlapping; contorted; convolute; -- applied primarily, in botany, to two opposite leaves, each of which has one edge overlapping the nearest edge of the other, and secondarily to a circle of several leaves or petals which thus overlap.

Oca

A Peruvian name for certain species of Oxalis (Oxalis crenata, and Oxalis tuberosa) which bear edible tubers.

Ocarina

A kind of small simple wind instrument.

Occamy

An alloy imitating gold or silver.

Occasion

To give occasion to; to cause; to produce; to induce; as, to occasion anxiety.

Occasional

Occuring at times, but not constant, regular, or systematic; made or happening as opportunity requires or admits; casual; incidental; as, occasional remarks, or efforts.

Occasionalism

The system of occasional causes; -- a name given to certain theories of the Cartesian school of philosophers, as to the intervention of the First Cause, by which they account for the apparent reciprocal action of the soul and the body.

Occasionality

Quality or state of being occasional; occasional occurrence.

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