obdurate: stubborn
obfuscate: muddle, cause, confuse
oblivion: forgetfulness, obscurity
oblivious: unmindful, wholly absorbed, inattentive
obloquy: disgrace, slander, infamy
obsequious: servile, submissive
obstinate: hard to treat or control, stubborn
obstreperous: noisy, boisterous
obtrude: intrude or forward, stick out, project
obtuse: stupid, blunt
occident: the West
occult: secret, supernatural, mysterious
odious: vile, hateful
officious: bossy, intrusive
olfactory: concerning the sense of smell
omnipresent: ubiquitous, universally present
omniscient: all- knowing
onerous: burdensome
onomatopoeia: words formed in imitation of natural sounds | opalescent: lustrous, iridescent
opaque: not transparent, dark
optimum: most favorable
opulence: abundance, extreme wealth
opus: work, composition
oracular: ambiguous, or mysterious, prophetic
ordain: grant holy orders, predestine, command or decree
ordinance: decree
orifice: small opening, mouth like opening
ornithologist: scientific student of birds
orthodox: conservative in belief, traditional
osseous: bony, made of bone
ossify: harden or change into bone
ostensible: professed, pretended, apparent
ostentatious: trying to attract attention, showy, pretentious
overbearing: arrogant, decisively important, bossy
ovoid: egg-shaped |
