Definition of unknown quantity in English:

unknown quantity

Syllabification: un·known quan·ti·ty

noun

  • A person or thing whose nature, value, or significance cannot be determined or is not yet known: the producers replaced her with an unknown quantity
    More example sentences
    • The label Frankenfoods is, as always, the way to get press, and a decent metaphor for the ambiguous nature of the unknown quantity.
    • Morris is an enigmatic moviemaker, an unknown quantity in the filmmaker personality department.
    • When I questioned one member about this, he suggested that was because the committee knew the reformers well, while the landowners were an unknown quantity.

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Word of the day skosh
Pronunciation: skōSH
noun
a small amount; a little