leave flat Idiom, Proverb
leave flatleave flat
Forsake or abandon completely, especially without warning. For example, He didn't tell her he wasn't picking her up; he just left her flat.
[Colloquial; c. 1900] Also see high and dry
; leave in the lurch
leave flat|flat|leavev. phr.
To quit or leave suddenly without warning when wanted or needed; desert; forsake; abandon. Sam found that being a member of the trail-clearing group was a lot of hard work, so he left them flat. My car ran out of gas and left me flat, ten miles from town. Compare:
LEAVE IN THE LURCH, WALK OUT2