KEY: Versed.
SYN: Skilled, practiced, conversant, acquainted, initiated,indoctrinated, clever, familiar, {thoroughly_acquainted},proficient.
ANT: Unskilled, ill-versed, unpracticed, inconversant, unfamiliar,uninitiated, ignorant, awkward, strange, unversed, untaught.

• Obliterate \v
• Oblivion
• Obloquy
• Obnoxious
• Obscene
• Obscure \a
• Obscure \v
• Obsequious
• Observance
• Observant
• Observation
• Observe
• Obsolete
• Obstacle
• Obstinacy, [See OBSTINATE]
• Obstinate
• Obstreperous
• Obstruct
• Obstruction
• Obtain, [See ACQUIRE]
• Obtestation
• Obtrude
• Obtuse
• Obumbrate
• Obverse, [See {[_]?}]