A word that replaces a noun, like 'he,' 'she,' 'it,' 'they,' or 'who,' so you don't have to repeat the noun over and over.
From Latin 'pronomen' (substitute for a name), from pro- (for/instead of) + nomen (name). Grammarians created this term to describe words standing in place of nouns.
Pronouns are so useful that every language has them, but they're also the part of speech that changes most across languages — what counts as a pronoun varies wildly from English to Japanese to Swahili.
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