Words Starting With O
31 SAT and GRE words beginning with O. Each links to its full entry with a definition, an example sentence and related words.
- Obdurateadjective
showing unfeeling resistance to tender feelings
- Obfuscateverb
make obscure or unclear
- Objectiveadjective
emphasizing or expressing things as perceived without distortion of personal feelings, insertion of fictional matter, or interpretation
- Obliqueadjective
slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled
- Obliterateverb
make undecipherable or imperceptible by obscuring or concealing
- Obliviousadjective
(followed by `to' or `of') lacking conscious awareness of
- Obnoxiousadjective
causing disapproval or protest
- Obscureadjective
not clearly understood or expressed; ; -Anatole Broyard; - P.A.Sorokin; - John Locke
- Obsequiousadjective
attempting to win favor from influential people by flattery
- Obsoleteadjective
no longer in use
- Obstinateadjective
tenaciously unwilling or marked by tenacious unwillingness to yield
- Obstreperousadjective
boisterously and noisily aggressive
- Obtrusiveadjective
sticking out; protruding
- Obtuseadjective
slow to learn or understand; lacking intellectual acuity; ; ; - Thackeray
- Obviateverb
prevent the occurrence of; prevent from happening
- Occludeverb
block passage through
- Odiousadjective
unequivocally detestable; ; ; ; - Edmund Burke
- Officiousadjective
intrusive in a meddling or offensive manner
- Ominousadjective
threatening or foreshadowing evil or tragic developments
- Omnipotentadjective
having unlimited power
- Omniscientadjective
infinitely wise
- Onerousadjective
not easily borne; wearing
- Opaqueadjective
not transmitting or reflecting light or radiant energy; impenetrable to sight
- Opprobriumnoun
state of disgrace resulting from public abuse
- Opulentadjective
rich and superior in quality
- Oraclenoun
a prophecy (usually obscure or allegorical) revealed by a priest or priestess; believed to be infallible
- Oscillateverb
be undecided about something; waver between conflicting positions or courses of action
- Ossifyverb
make rigid and set into a conventional pattern
- Ostensibleadjective
represented or appearing as such; pretended
- Ostentatiousadjective
intended to attract notice and impress others
- Ostracizeverb
avoid speaking to or dealing with