A pronoun meaning any person at all, used in questions or negative sentences to refer to one person from an unlimited group.
Compound of 'any' (from Old English 'ænig') and 'body' (from Old English 'bodig'), fused over time; 'body' originally meant a physical form but evolved to represent a person.
The word 'anybody' is tricky because it's technically singular (it takes 'is' not 'are'), yet we often use it with plural pronouns like 'they'—modern English speakers are slowly rewriting the rule because singular 'they' just feels more natural.
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