- IPA[ˌdɛsɪɡneɪtɪd ˈdrʌɪvə]
- a person who abstains from alcohol at a social gathering so as to be fit to drive others home.
noun: designated driver, plural noun: designated drivers
- IPA[ˌdeziɡnādəd ˈdrīvər]
- a member of a group who abstains from alcohol in order to drive the others safely.
Oxford American Dictionary