designated driver
noun
a person who abstains from alcoholic beverages at a gathering in order to be fit to drive companions home safely.
Words nearby designated driver
desideratum,
desiderium,
design,
designate,
designated,
designated driver,
designated employment,
designated hitter,
designation,
designed,
designedly
British Dictionary definitions for designated driver
designated driver
noun
a person who volunteers not to drink alcohol on a social occasion, so that he or she can safely drive other people who have been drinking