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oaf

stupid awkward person; CF. elf

obdurate

stubborn; refusing to change one's belief

obeisance

bow

obelisk

tall column tapering and ending in a pyramid

obese

excessively fat; N. obesity

obfuscate

confuse; muddle; cause confusion; make needlessly complex; make so confused as to be difficult to understand

obituary

death notice ; ADJ.

objective

not influenced by emotions; fair; N: goal; aim

obligatory

binding; required; compulsory; V. oblige: constrain; make grateful; do a favor; accommodate

oblique

indirect; slanting ; Ex. oblique reference

obliterate

destroy completely; wipe out; Ex. obliterate the village

oblivion

obscurity; condition of being completely forgotten; forgetfulness

oblivious

inattentive or unmindful; unaware; wholly absorbed; forgetful

obloquy

slander; disgrace; infamy

obnoxious

offensive; disagreeable; Ex. obnoxious smell

obscure

dark; vague; unclear; not well known; Ex. obscure meaning/village; V: darken; cover; make unclear; Ex. obscure the moon/meaning

obsequious

slavishly attentive; servile; full of servile compliance; sycophantic

obsequy

funeral ceremony

obsessive

related to thinking about something constantly; of an obsession; preoccupying; N. obsession: compulsive preoccupation with a fixed idea; compulsive idea; V. obsess: preoccupy the mind of excessively

obsidian

black volcanic rock

obsolete

outmoded; no longer used

obstetrician

physician specializing in delivery of babies; N. obstetrics; CF. midwife

obstinate

stubborn; hard to control or treat; Ex. obstinate cough; N. obstinacy

obstreperous

boisterous; noisy and uncontrollable

obtrude

push forward or intrude; impose on others; butt in; stick out or extrude; thrust out; Ex. obtrude A on B; ADJ. obtrusive; N. obtrusion; CF. unobtrusive

obtuse

blunt; not sharp; stupid; slow in understanding

obviate

make unnecessary; get rid of; Ex. obviate the need

Occident

the West

occlude

shut; close; obstruct; Ex. A blood clot occluded an artery.

occult

mysterious; secret; supernatural; beyond human comprehension; CF. mysterious to human ?; OP. bare

oculist

physician who specializes in treatment of the eyes

odious

arousing strong dislike; hateful; vile

odium

detestation; quality of being odious; hatefulness; disrepute

odoriferous

giving off an odor

odorous

having an odor

odyssey

long, eventful, adventurous journey

offensive

attacking; insulting; distasteful; V. offend: violate; hurt the feelings of; N. offense: offending; violating of a moral or social code; crime; attack; Ex. first offense

offhand

casual; done without prior thought or preparation

officious

meddlesome; excessively pushy in offering one's services; overly eager in offering unwanted services or advices; Ex. officious bellboy

ogle

look at amorously; make eyes at; Ex. old men ogling young girls

olfactory

concerning the sense of smell

oligarchy

government by a privileged few

ominous

threatening; of an evil omen

omnipotent

all-powerful; having unlimited power

omnipresent

universally present; ubiquitous

omniscient

all-knowing

omnivorous

eating both plant and animal food; devouring everything

onerous

burdensome

onomatopoeia

words formed in imitation of natural sounds

onslaught

vicious assault; fierce attack; Ex. unexpected onslaught of the enemy

onus

burden; responsibility

opalescent

iridescent; lustrous; like an opal; N. opalescence

opaque

dark; not transparent; N. opacity

opiate

medicine to induce sleep or deaden pain; something that relieves emotions or causes inaction; sleep-producing drug containing opium

opportune

timely; well-chosen

opportunist

individual who sacrifices principles for expediency by taking advantage of circumstances; N. opportunism

opprobrium

infamy; disgrace arising from shameful conduct; vilification; scorn; contempt; Ex. opprobrium hurled against him; ADJ. opprobrious: expressing contempt; shameful or infamous

optician

maker and seller of eyeglasses

optimist

person who looks on the bright side; N. optimism

optimum

most favorable; optimal; N: most favorable condition

optional

not compulsory; left to one's choice; N. option: act of choosing; choice; freedom or power to choose; something available as a choice; Ex. have no option; Ex. two options

optometrist

one who fits glasses to remedy visual defects

opulence

extreme wealth; luxuriousness; abundance; ADJ. opulent: possessing great wealth; abundant

opus

work ; Ex. magnum opus: masterpiece; CF. opera

oracular

of an oracle; prophetic; uttered as if with divine authority; mysterious or ambiguous; hard to understand; N. oracle: wiser person; prophecy made by an oracle

orator

public speaker

oratorio

dramatic poem set to music; long musical work with singing but without acting; CF. cantata

ordain

decree or command; grant holy orders; predestine; install as a minister, priest, or rabbi; N. ordainment; CF. ordination

ordeal

severe trial or affliction; difficult experience; trial; affliction

ordinance

decree; authoritative order

ordination

ceremony conferring holy orders; ceremony of ordaining a priest

orgy

wild drunken revelry; unrestrained indulgence in an activity; Ex. orgy of shopping

orient

get one's bearings; adjust; make familiar with a situation; orientate

orientation

act of finding oneself in society; orienting

orifice

mouthlike opening; small opening ; CF. mouth

ornate

excessively or elaborately decorated

ornithologist

scientific student of birds; N. ornithology: scientific study of birds

orthodox

traditional; conservative in belief; adhering to an established doctrine

orthography

correct spelling; CF. ortho-: straight; correct; Ex. orthodontics

oscillate

vibrate pendulumlike; waver

osseous

made of bone; bony

ossify

change or harden into bone; become hard and unchanging in one's ideas

ostensible

apparent; appearing as such; professed; pretended; Ex. ostensible purpose of the expedition

ostentatious

showy; trying to attract attention; pretentious; N. ostentation: showy display

ostracize

banish from a group; exclude from public favor; ban; Ex. His friends ostracized him. N. ostracism

oust

expel; drive out; force out; N. ouster: ousting

outlandish

bizarre; peculiar; unconventional

outmoded

no longer in fashion or use; no longer stylish; old-fashioned

outrage

act of extreme violence or viciousness; resentful anger; V: commit an outrage on; produce anger in; ADJ. outrageous: offensive

outskirts

fringes; outer borders ; Ex. outskirts of Boston

outspoken

candid; blunt

outstrip

outrun; surpass; outdo

outwit

outsmart; defeat by behaving more cleverly

ovation

enthusiastic applause

overbearing

bossy; domineering and arrogant; decisively important; Ex. overbearing manner/importance; V. overbear: dominate

overblown

inflated; exaggerated

overt

open to view; public; not secret; CF. covert

overweening

arrogant; presumptuous

overwrought

nervous or excited; extremely agitated; hysterical; wrought-up; CF. wrought: made or done

ovoid

egg-shaped; CF. ovum; CF. ovulate

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