/ ˌtiːˈtəʊtl; NAmE -ˈtoʊtl/ adjective
never drinking alcohol :
He's strictly teetotal.
► tee·total·ism noun [ U ]
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WORD ORIGIN
mid 19th cent.: emphatic extension of total , apparently first used by Richard Turner, a worker from Preston, in a speech (1833) urging total abstinence from all alcohol, rather than mere abstinence from spirits, advocated by some early temperance reformers.