OBLIVIOUS Meaning of OBLIVIOUS in English adj. 1 (often foll. by of) forgetful, unmindful. 2 (foll. by to, of) unaware or unconscious of. obliviously adv. obliviousness n.[ ME f. L obliviosus (as OBLIVION) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012