frenemy

[ fren-uh-mee ]
/ ˈfrɛn ə mi /

noun

Informal. a person or group that is friendly toward another because the relationship brings benefits, but harbors feelings of resentment or rivalry: Clearly, turning the competition into frenemies is good for your business.
Sometimes frien·e·my.

Origin of frenemy

First recorded in 1950-55; fr(iend) + enemy

Example sentences from the Web for frenemy