- apt to forget; that forgets: a forgetful person.
- heedless or neglectful (often followed by of): to be forgetful of others.
- bringing on oblivion: forgetful slumber.
- tending to forget
- (often postpositive foll by of) inattentive (to) or neglectful (of)
- poetic causing loss of memory
adj.late 14c., from forget + -ful. Related: Forgetfully; forgetfulness.