Teetotal a. : Entire; total.

Example:
How many of you here are Teetotal?

Taxonomy
teetotalism, Alcohol, abstinence, non-alcoholic beverages, free encyclopedia, tee, temperance, tea, temperance movement, Synonyms, teetotaller, teetotal, intoxicants, attributes, idioms, search, the practice, alcoholic beverages.

Defination from the web:
teetotal. ... A more likely explanation is that teetotal is simply a reduplication of the 'T' in total (T-total) ...