Definition of "what"
pronoun:
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Which thing, event, circumstance, etc.: used interrogatively in asking for the specification of an identity, quantity, quality, etc.
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An interrogative which asks "Don't you agree?".
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That; which.
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That which; those that; the thing that.
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adverb:
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In some manner or degree; in part; partly; usually followed by with.
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Such; this is; that is.
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Why?.
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Used to introduce each of two coordinate phrases or concepts; both ... and.
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interjection:
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An expression of surprise or disbelief.
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Is that not true?.
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determiner:
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Which; which kind of.
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How much; how great (used in an exclamation).
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