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Which

/wɪtʃ/

Used to refer to a specific thing or person from a group; often introduces a clause

Synonyms:

This word has no antonyms

Which dress do you like?This is the room which I cleaned today.

Old English hwilc, hwylc from the Proto-Germanic *hwillikaz, meaning who of two or who of the kind, related to Gothic hwileiks.

1625 mentions per 1 million words

Very Often

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