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ob·stet·rics noun singular or plural : a branch of medicine that deals with birth and with its antecedents and sequels

— ob·stet·ric or ob·stet·ri·cal adjective

— ob·ste·tri·cian noun

ob·sti·na·cy noun : the quality or state of being obstinate

Synonyms

hardheadedness, mulishness, obduracy, peevishness, pertinacity, self-will, stubbornness, tenacity; also perverseness, perversity, resistance, wrongheadedness; persistence, hardness, inflexibility, relentlessness, sternness, strictness; certainty, determination, firmness; resolve, rigidity, steadfastness; defiance, disobedience, insubordination, recalcitrance

ob·sti·nate adjective : fixed and unyielding (as in an opinion or course) despite reason or persuasion : STUBBORN

— ob·sti·nate·ly adverb

Synonyms

dogged, hardheaded, headstrong, mulish, obdurate, opinionated, peevish, pertinacious, perverse, pigheaded, stubborn, unyielding, willful; also hidebound, narrow-minded; resistant, wayward, wrongheaded; persistent, tenacious; adamant, adamantine, hard, inflexible, iron, relentless, rigid, stern, strict, unbending, uncompromising, unrelenting; determined, firm, inexorable, steadfast, sure; contrary, disobedient, froward, insubordinate, intractable, recalcitrant, refractory, uncooperative, ungovernable, unmanageable, unruly; defiant, insurgent, mutinous; indomitable

ob·strep·er·ous adjective 1 : uncontrollably noisy

2 : stubbornly resistant to control : UNRULY

— ob·strep·er·ous·ness noun

Synonyms

blatant, clamorous, vociferous—more at VOCIFEROUS

ob·struct verb 1 : to block by an obstacle

2 : to impede the passage, action, or operation of

3 : to cut off from sight

— ob·struc·tive adjective

— ob·struc·tor noun

Synonyms

[1] block, choke, clog, close, congest, dam, jam, plug, stop, stuff—more at CLOG

[2] delay, hamper, hinder, hold back, hold up, impede, inhibit, interfere—more at HAMPER

ob·struc·tion noun 1 : an act of obstructing : the state of being obstructed

2 : something that obstructs : HINDRANCE

ob·struc·tion·ist noun : a person who hinders progress or business esp. in a legislative body

— ob·struc·tion·ism noun

ob·tain verb 1 : to gain or attain usu. by planning or effort

2 : to be generally recognized or established

Synonyms

acquire, attain, capture, carry, draw, earn, gain, garner, get, land, make, procure, realize, secure, win—more at EARN

ob·tain·able adjective : capable of being obtained

Synonyms

accessible, acquirable, attainable, available, procurable—more at AVAILABLE

ob·trude verb ob·trud·ed; ob·trud·ing 1 : to thrust out

2 : to thrust forward without warrant or request

3 : to become unduly prominent or interfering : INTRUDE

— ob·tru·sion noun

— ob·tru·sive·ly adverb

— ob·tru·sive·ness noun

Synonyms

butt in, interfere, intrude, meddle, mess, nose, poke, pry, snoop—more at INTERFERE

ob·tru·sive adjective : forward in manner or conduct

Synonyms

intrusive, meddlesome, nosy, officious, presumptuous, prying—more at INTRUSIVE

ob·tuse adjective ob·tus·er; -est 1 : exceeding 90 degrees but less than 180 degrees <~ angle>

2 : not pointed or acute : BLUNT

3 : not sharp or quick of wit

— ob·tuse·ly adverb

Synonyms

[2] blunt, dull—more at DULL

[3] dense, dull, dumb, slow, stupid, thick, unintelligent

ob·tuse·ness noun : the quality or state of being obtuse

Synonyms

denseness, stupidity—more at STUPIDITY

obv abbreviation obverse

1obverse adjective 1 : facing the observer or opponent

2 : being a counterpart or complement

— ob·verse·ly adverb

2obverse noun 1 : the side (as of a coin) bearing the principal design and lettering

2 : a front or principal surface

3 : a counterpart having the opposite orientation or force

ob·vi·ate verb -at·ed; -at·ing : to anticipate and prevent (as a situation) or make unnecessary (as an action)

— ob·vi·a·tion noun

Synonyms

avert, forestall, help, preclude, prevent—more at PREVENT

ob·vi·ous adjective [ORIGIN: L obvius,