GRE vocab "o" words

obdurate

stubborn, unyielding

obeisance

a deep bow or other body movement

obfuscate

to confuse

objectionable

offensive

objective

not influenced by personal feelings

objurgation

a harsh rebuke

obloquy

public abuse indicating strong disapproval

obsequious

overly submissive and eager to please

obstinate

stubborn

obstreperous

noisy and difficult to control

obstrusive

noticeable or prominent in an unwelcome or intrusive way

occluded

closed or obstructed

odious

deserving hate or contempt

officious

meddling, excessively forward in offering services or assuming authority

offset

counteract, compensate for

ogle

stare at

omission

to leave something out

omniscient

all-knowing

onus

burden or obligation

opaque

not letting light through

openhanded

generous

opine

hold and state as one’s opinion

opportune

timely

opprobrium

public disgrace

opulent

rich, luxurious, wealthy

ornate

elaborately decorated

orthodox

in agreement with established or generally accepted beliefs or ways of doing things

oscillate

to swing back and forth with a steady rhythm

ossified

become fixed and rigid

ostentatious

showy, pretentious

ostracize

to exclude from a group, banish, send away

outmoded

no longer needed or fashionable

outstrip

surpass, exceed

overshadow

cast a shadow over

overweening

arrogant