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Abbreviations Adjectives Collective Nouns Free Dictionary Colors Dictionary Rhyming Dictionary


O - Words that start with O - words starting with O
a clumsy, stupid person
regarded as stupid or clumsy
oak
a hardwood tree
oar
to propel with long, broad-bladed poles
oat
a kind of grass with edible seeds
oba
a hereditary chief of Nigeria
obdurate
unyielding, hardhearted; stubborn
obedient
dutifully complying with the commands, orders, or instructions of one in authority
obeisance
homage, deference; bow
obelisk
tall column, monument; tall column tapering and ending in a pyramid
obese
fat
obfuscate
bewilder, muddle; confuse; cause confusion; make needlessly complex
obi
a religious belief of African origin
obituary
eulogy; death notice
objective
unbiased; goal; aim; fair; not influenced by emotions
objectivity
impartiality
oblation
offering, sacrifice
obligatory
required, compulsory; binding
oblige
compel
obliging
accommodating, considerate
oblique
indirectslanting (deviating from the perpendicular or from a straight line)
obliquity
perversity
obliterate
destroy completely
oblivion
obscurity; forgetfulness
oblivious
lacking remembrance, memory, or mindful attention; inattentive or unmindful; wholly absorbed
oblong
elliptical, oval
obloquy
slander; disgrace; infamy
obnoxious
offensive
obscure
vague, unclear
obsequious
fawning, servile; slavishly attentive; sycophantic
obsequy
funeral ceremony
observant
watchful
observatory
a building or place given over to or equipped for observation of natural phenomena (as in astronomy)
obsess
to haunt or excessively preoccupy the mind of
obsessive
related to thinking about something constantly; preoccupying
obsidian
black volcanic rock
obsolete
outdated; outmoded
obstacle
something that impedes progress or achievement
obstetrician
physician specializing in delivery of babies
obstinate
stubborn; hard to control or treat
obstreperous
noisy, unruly; boisterous
obstruct
to hinder from passage, action, or operation
obtain
gain possession
obtrude
push (oneself or one's ideas) forward or intrude; butt in; stick out or extrude
obtrusive
forward, meddlesome
obtuse
stupid; blunt
obviate
make unnecessary; get rid of
oca
a South American wood sorrel cultivated for its edible tubers
occident
the West
occlude
block; shut; close
occult
mystical, secret, relating to the supernatural or witchcraft; mysterious; secret; supernatural
occurrence
something that occurs
och
expression to express impatience, regret, surprise or anger
octogenarian
person in her eighties
ocular
optic, visual
oculist
physician who specializes in treatment of the eyes
oda
a room in a harem
odd
unusual; strange
odd
odd
ode
poem
ode
a lyric poem
odious
despicable; hateful; vile
odium
hatred and condemnation accompanied by loathing or contempt; detestation; hatefulness; disrepute
odoriferous
pleasant odor; giving off an odor
odorous
having an odor
ods
hypothetical forces of natural power (plural of OD)
odyssey
long, eventful journey
oes
whirlwinds off the Faroe islands (plural of OE)
off
to go away
offal
inedible parts of a butchered animal
offbeat
not conforming to an ordinary type or pattern; unconventional
offend
to cause dislike, anger, or vexation
offensive
attacking; insulting; distasteful
offertory
church collection
offhand
without premeditation or preparation; casual; done without prior thought
officiate
supervise
officious
forward, obtrusive; meddlesome; excessively pushy in offering one's services
offish
somewhat cold and reserved
offset
counterbalance
offshoot
something that comes from something else
oft
frequently; often
ogle
flirt; look at amorously; make eyes at
ogre
monster, demon
ohm
a unit of electrical resistance
oho
An exclamation of surprise or exultation
ohs
exclamations of surprise or exultation (plural of OH)
oik
a rude and stupid person
oil
a slippery or viscous liquid
oka
a Turkish unit of weight
oke
a Turkish unit of weight
oleaginous
oily
old
living or existing for a relatively long time
ole
a shout of approval
olfactory
concerning the sense of smell
oligarchy
aristocracy; government by a privileged few
olio
medley
olive
olive
olm
a cave-dwelling European salamander
ominous
threatening
omnibus
collection, compilation
omnipotent
all-powerful
omnipresent
present everywhere simultaneously; universally present; ubiquitous
omniscient
all-knowing
omnivorous
eating both plant and animal food; devouring everything
oms
mantras (plural of OM)
one
an individual person or thing
onerous
burdensome
onomatopoeia
words formed in imitation of natural sounds
ons
in operations (plural of ON)
onslaught
powerful attack; fierce attack; vicious assault
ontology
the study of the nature of existence
onus
burden; responsibility
ooh
to exclaim in amazement, joy, or surprise
oop
to bind with thread
oor
belonging to us
oos
Hawaiian birds (plural of OO)
oot
out
opacity
the quality or state of a body that makes it impervious to the rays of light
opal
opal
opalescent
iridescent; lustrous
opaque
nontransparent; dark
ope
to open
operative
working
operetta
musical comedy
opiate
narcotic; medicine to induce sleep or deaden pain; something that relieves emotions or causes inaction
opine
think, express an opinion
opportune
well-timed, appropriate timely; well-chosen
opportunist
individual who sacrifices principles for expediency by taking advantage of circumstances
oppose
to place over against something so as to provide resistance, counterbalance, or contrast
oppress
persecute
oppression
unjust or cruel exercise of authority or power
oppressive
burdensome
opprobrious
abusive, scornful
opprobrium
disgrace; infamy, vilification
question the validity or truthfulness of
ops
abstract arts (plural of OP)
opt
choose
opt
decide, choose
optician
maker and seller of eyeglasses
optimal
most desirable or satisfactory
optimist
person who looks on the bright side
optimization
an act, process, or methodology of making something (as a design, system, or decision) as fully perfect, functional, or effective as possible
optimum
best condition; most favorable
optional
elective; not compulsory; left to one's choice
optometrist
one who fits glasses to remedy visual defects
opulence
wealth; luxuriousness; abundance
opulent
amply or plentifully provided or fashioned often to the point of ostentation
opus
literary work or musical composition; work
ora
orifices (plural of OS)
oracle
prophet
oracular
prophetic; uttered as if with divine authority; mysterious or ambiguous
orange
orange
Orange River
longest river in South Africa
oration
speech
orator
public speaker
oratorio
dramatic poem set to music
orb
sphere
orb
an object with a spherical shape
orchestrate
organize
ordain
appoint; decree or command; grant holy orders; predestine
orc
an ugly mythical creature
orchid
a flower
ordeal
severe trial or affliction
orderly
neat, arranged
ordinance
law; decree
ordinary
of no exceptional ability, degree, or quality; average
ordination
ceremony conferring holy orders
ordnance
artillery
ore
a mineral or rock containing a valuable metal
orf
sore mouth
orgy
wild, drunken revelry; unrestrained indulgence
orient
align, familiarize; get one's bearings; adjust
orientation
act of finding oneself in society
orifice
mouthlike opening; small opening
original
not secondary, derivative, or imitative
Orinoco River
longest river in Venezuela
orison
prayer
Orkhon River
longest river in Mongolia
ornate
lavishly decorated; excessively or elaborately decorated
ornithologist
scientific student of birds
ors
the heraldic colors gold (plural of OR)
ort
a scrap of food; morsel
ornithology
study of birds
orthodox
conventional; traditional; conservative in belief
orthodoxy
the quality or state of being conforming to established doctrine especially in religion
orthography
correct spelling
oscillate
waver, swing; vibrate pendulumlike; waver
ose
a narrow ridge of gravel and sand
osseous
made of bone; bony
ossify
harden; change or harden into bone
ostensible
apparent, seeming; professed; pretended
ostentation
showiness
ostentatious
pretentious; showy; trying to attract attention
ostracism
exclusion by general consent from common privileges or social acceptance
ostracize
banish, shun; exclude from public favor; ban
otherworldly
spiritual
otiose
idle
oud
a stringed instrument of northern Africa
Ouémé River
longest river in Benin
ouk
a period of seven days; a week
our
belonging to us
oust
to eject from a position or place; expel; drive out
ouster
ejection
out
away from an area, town, or country
outgoing
openly friendly and responsive
outlandish
conspicuously unconventional; bizarre; peculiar
outmaneuver
to overcome (an opponent) by artful, clever maneuvering
outmoded
out-of-date; no longer stylish; old fashioned
outre
eccentric
outset
beginning
outskirts
fringes; outer borders
outspoken
candid; blunt
outstrip
surpass; outdo
outwit
to get the better of by superior cleverness; outsmart; trick
ova
an egg; the female reproductive cell of animals
ovation
enthusiastic applause
overbearing
harshly and haughtily arrogant; bossy; decisively important
overdose
too great a dose (as of a therapeutic agent)
overexposure
to expose excessively; especially :to expose (as film) to excessive radiation (as light)
overhaul
to examine thoroughly
overlap
to occupy the same area in part
overrule
disallow
overt
open to view
overture
advance, proposal
overweening
arrogant, forward; presumptuous
overwhelm
overpower
overwrought
overworked, highstrung; extremely agitated; hysterical
ovoid
g-shape
ovum
egg, cell
owe
to be under obligation to pay
owl
a nocturnal bird
own
to have as a possession
owt
anything
oxo
containing oxygen
oxymoron
a combination of contradictory or incongruous words, for example "open secret", "young-old man"
oye
a grandchild
oys
grandchildren (plural of OY)

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