teetotaler

noun

Etymology: Etymology tree English teetotal Proto-Indo-European *-yósder. Proto-Italic *-āzijos Latin -āriusnom. Latin -āriusbor. Proto-Germanic *-ārijaz Proto-West Germanic *-ārī Old English -ere Middle English -ere English -er English teetotaler From teetotal + -er.

1. A person who completely abstains from alcoholic beverages.

   “[Richard] Nixon was becoming erratic and drinking too much, so [James] Schlesinger told the chairman of the Joint Chiefs of Staff that any “unusual” orders from Nixon should be routed over to him. […] [Donald] Trump is famously a teetotaler, but he has publicly surpassed Nixon’s anguish and paranoia.”