Main entry: oblivious, forgetful
Definition: failing to keep in mind
Usage: forgetful of her responsibilities; oblivious old age
Main entry: mindless, unmindful, forgetful
Definition: not mindful or attentive
Usage: while thus unmindful of his steps he stumbled- G.B.Shaw
Main entry: unretentive, forgetful, short
Definition: (of memory) deficient in retentiveness or range
Usage: a short memory