To my eyes, "canceled" should be pronounced "kan-seeld". This is the rule I followed until Microsoft spell-check came along and told me it was wrong. I see from Google ngrams that "cancelled" was more popular than "canceled" until circa 1985, so I wonder if Microsoft spell-check is, in fact, dictating the future course of the language! – More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.