I would say no, because it is a well-known term in the English language (across continents) that's in all standard dictionaries. However, I believe that the dictionary carries colloquialisms these days too so maybe... I think something like the below would be an actual colloquialism (local term for a common word used in the language) though:

Wowser (Noun)

Pronunciation: [waw-zê(r)]

Definition 1: Regional colloquialism (Australia and New Zealand). A puritanical fanatic, a prudish teetotaler; a killjoy and party-pooper all rolled into one.

From http://www.geocities.com/thebardiccircle/VB/11_12.html

So just call them a wowser instead! :o)



>Thank you Tracy. So... it's a coloquial term right?
>
>>It's actually "teetotaler," and its meaning is: "one who abstains from imbibing alcoholic beverages."
>>
>>From:
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>>http://www.word-detective.com/041899.html
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>>(I don't know how accurate it is)
>>
>>
>>There is general agreement that the first use of "teetotal" in reference to abstention from alcohol was in a speech to an English temperance society by a man named Richard Turner in 1833. Whereas some of his contemporaries drew a moral distinction between beer and hard liquor, Turner urged his listeners to abstain totally from all alcohol.
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>>Contrary to popular legend, there is no evidence that Turner recommended "tea" as an alternative to alcohol, or that his listeners were urged to mark the letter "T" for "Total Abstinence" on their pledge cards at the meeting. The "tee" tacked onto the front of "total" was just a common way, at that time, of giving extra emphasis to a word, a process linguists call "reduplication." (And yes, the term "reduplication" has always struck me as weirdly redundant.) The use of "teetotal" to mean "absolutely, totally" is well-documented in other, non-alcoholic writings of the day. For instance, one author, writing in 1885, had occasion to write, "I hope I may be tee-totally ruinated, if I=d take eight hundred dollars for him."
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