Is it 'spoonsful' or 'spoonfuls'? 'Fish' or 'fishes'? Take our singular-plural English quiz and see how many you manage to get right. Answers are provided upon submission of results on each page and ...

Think you know your plurals? From everyday words like “tomato” to tricky Latin and Greek forms like “nucleus” and “appendix,” this 25-question quiz will put your grammar skills to the ultimate test.

Most of us don’t think twice about plural forms — we just kind of know them. But when you actually have to spell them out, things get trickier. Is it “knifes” or “knives”? “Cactuses” or “cacti”?

If you eat one chocolate, and then another, and then another, then you'll have eaten lots of chocolates. This is called a plural (and potentially an upset stomach). But plurals aren't always as easy ...