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modal auxiliary

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noun

Grammar. any of the group of English auxiliary verbs, including can, could, may, might, shall, should, will, would, and must, that are used with the base form of another verb to express distinctions of mood.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of modal auxiliary

First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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