Dear John

noun, Informal.
1.
a letter from a woman informing her boyfriend or fiancé that she is ending their relationship or informing her husband that she wants a divorce:
Nothing is worse for a soldier's morale than getting a Dear John.
2.
any letter terminating a relationship.
Also called Dear John letter.
Origin
1940-45
Contemporary definitions for Dear John
noun

See Dear John letter

Slang definitions & phrases for Dear John

Dear John

modifier

: Dear-John letter

noun phrase

A letter or other means of informing a fiance´, spouse, boyfriend, etc, that one is breaking off the relationship (fr WWII armed forces)