A fork of Rural Dictionary
To leave or disappear without letting your party know you're leaving.
"Hey John, don't do a French Leave after work, we're all going to happy hour."
Usually after a night of amazing sex, the woman leaves in the morning without a trace, save a thank you note.
Mike: What's wrong with Eddie? Sally: Juliette pulled a French Leave on Eddie last night. Mike: Oh snap!
Going AWOL, Desertion, etc.
"Zut alors! Où sont les militaires allés?" "Ils ont pris, comme les Anglais disent, <<French Leave>>, quand ils ont entendu les gun-shots!" "Hmm, comme d'habitude!" (Shrug of gallic insouciance).
To leave someone without saying goodbye
"When they found that our masters were too vigilant for them, they take French leave of us, and ran along the beach with incredible swiftness..."