Can you spell the plural forms of the most challenging words? Take this quiz to find out!

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Get PremiumIn most cases to make a word plural you simply add an "s" or "es". There are, however, some exceptions. The plurals of certain words are more unusual and may not be as easy to predict.
Do you know how to spell the plural forms of the most challenging words? Take this quiz to see if you can score full marks. The results may surprise you.