Synonyms: oblivious, forgetful
Definition: failing to keep in mind
Usage: forgetful of her responsibilities; oblivious old age
Similar words: inattentive
Definition: showing a lack of attention or care
Usage: inattentive students; an inattentive babysitter
Synonyms: unmindful, oblivious
Definition: (followed by `to' or `of') lacking conscious awareness of
Usage: oblivious of the mounting pressures for political reform; oblivious to the risks she ran; not unmindful of the heavy responsibility
Similar words: incognizant, unaware
Definition: (often followed by `of') not aware
Usage: seemed unaware of the scrutiny; unaware of the danger they were in; unaware of the newborn hope; the most unaware person I've known