Definition of lest we forgetformal + literary
- She's a talented singer and, lest we forget, a fine musician as well.
: for fear that
: to lose the remembrance of : be unable to think of or recall
: to cease from doing
: to treat with inattention or disregard
What made you want to look up lest we forget? Please tell us where you read or heard it (including the quote, if possible).