odour, odorant, odoriferous, odorous

In such words as odour, Canadians generally prefer the British ending -our to the American ending -or.

  • The distinctive odour of skunk permeated the campsite.

However, the u is dropped in odorant, odoriferous and odorous.

  • Deodorants, perfumes and aftershaves are all odorants, products emitting a scent or smell.
  • Three weeks into the summer garbage strike, the air was positively odoriferous (or odorous).

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