unmindful; unconscious; unaware (usually fol. by of or to )

She was oblivious of his admiration.

forgetful; without remembrance or memory

oblivious of my former failure.

Archaic . inducing forgetfulness.

adjective

aware , concerned , conscious , mindful , sensitive , understanding

adjective

absent , absentminded , absorbed , abstracted , amnesic , blind * , blundering , careless , deaf * , disregardful , distracted , dreamy , forgetful , forgetting , gone , heedless , inattentive , incognizant , inconversant , insensible , neglectful , negligent , not all there , out to lunch , overlooking , preoccupied , regardless , spacey , strung out , unacquainted , unconcerned , unconscious , undiscerning , unfamiliar , uninformed , uninstructed , unknowing , unmindful , unnoticing , unobservant , unrecognizing , unwitting , zonked *notes:oblivious means lacking all memory or lacking active conscious awareness or knowledge , while obvious means easily perceived or understood , amnesiac , innocent , unaware , unenlightened , blind