The member of a party who is designated to refrain from alcohol and so is sober when it is time to drive home.

Roget 953: temperance, moderation, sobriety, soberness.    forbearance, abnegation; self-denial, self-restraint, self-control etc. (resolution) 604.    frugality; vegetarianism, teetotalism, total abstinence; abstinence, abstemiousness; Encratism^†, prohibition; system of Pythagoras, system of Cornaro; Pythagorism, Stoicism.    vegetarian; Pythagorean, gymnosophist^†.    teetotaler etc. 958; abstainer; designated driver; Encratite^†, fruitarian^†, hydropot^†.    ... show more

Dutch: bob