In general, to form plurals in English, you add either -s or -es (and sometimes change a y to an i). But there are a number of words – including some you use every day – that don’t follow this rule.

Usually English plurals are pretty easy. Just add s: one dog, two dogs. We know some plurals don't use s: children, deer. There are some nouns that we seem to use only in the plural: thanks, ...

The word data leaves some of us in a conundrum. Data is the plural of datum, the Latin word for something given. Ordinarily, the plural word would get a plural verb. The chickens are on their nests.

Take our English quiz and find out if you know the plurals of these tricky words. Is the word 'sheep' singular or plural? What is the plural form of 'information'? While you can derive the plurals of ...

Algae thrives in sunlight. Or is it algae thrive? These are the questions that can broadside a copy editor years, even decades, into her career. When it comes to English, there’s never a point where ...

The English language doesn’t always abide by its own rules. It’s a giant melting pot of etymologies, sourcing itself from all over the world. The perplexing silent letters in words like “tsunami” and ...