teetotaller
Concise Oxford English Dictionary © 2008 Oxford University Press:
teetotal/tiːˈtəʊtl/
▶adjective choosing or characterized by abstinence from alcohol.
– derivatives
teetotalism noun,
teetotaller noun.
teetotalism noun,
teetotaller noun.
– origin C19: emphatic extension of total, appar. first used by Richard Turner, a worker from Preston, in a speech (1833) urging total abstinence from all alcohol.
'teetotaller' also found in these Oxford entries:

