Iv'e seen both spellings of the phrase. Is one correct and the other incorrect or are they both acceptable? Does one belong to British English?
Learn English – “Wear off” or “ware off”
idiomsorthography
Related Solutions
The Corpus of Contemporary American English has 30 incidences of synced and 14 of synched. Over half of the incidences of synced are from the magazine PC World, though. Synced does appear to be most commonly used in computing contexts.
This seems like a good one for Ngram.
It looks like in British English moustache has always been the preferred spelling.
In American English, it's been more of a battle with mustache now in the lead.
So here's a combined view. Both are contenders in the English-speaking world, but clear preferences exist on opposite sides of the pond.
(Have to wonder if the peaks and valleys correspond to mustaches going in and out of vogue.)
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Best Answer
"Ware off" is simply incorrect regardless of whether we're talking British or American English. It is not in use at all.
See: http://ngrams.googlelabs.com/graph?content=wear+off%2C+ware+off&year_start=1800&year_end=2000&corpus=0&smoothing=3