memory lapse

: the power or process of reproducing or recalling what has been learned and retained especially through associative mechanisms

: the store of things learned and retained from an organism's activity or experience as evidenced by modification of structure or behavior or by recall and recognition

: commemorative remembrance

: a slight error typically due to forgetfulness or inattention

: a temporary deviation or fall especially from a higher to a lower state

: a becoming less : decline

: to fall from an attained and usually high level (as of morals or manners) to one much lower

: sink, slip

: to go out of existence : cease