unknown quantity

مقدارمجهول یانامعلوم ، کسیکه کردارش رانتوان پیش بینی کر د
unknown quantity noun [C usually singular]
a person or a thing whose abilities, powers or effects are not yet known:
The third candidate for the party leadership is a relatively unknown quantity.

[TahlilGaran] Advanced Learner's Dictionary

unknown quantity
a person or thing which nobody knows much about
The new mayor was an unknown quantity and nobody knew what to expect.

[TahlilGaran] English Idioms Dictionary

unknown quantity
n. Someone or something whose value and importance are not known, especially in a certain situation, time or place; a new and untested person or thing.
What we would find if we could fly to the moon is an unknown quantity.
The new player is still an unknown quantity. We'll find out how good he is in the game.

[TahlilGaran] English Idioms Dictionary

TahlilGaran Online Dictionary ver 14.0
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TahlilGaran : دیکشنری آنلاین تحلیلگران (معنی unknown quantity) | علیرضا معتمد , دیکشنری تحلیلگران , وب اپلیکیشن , تحلیلگران , دیکشنری , آنلاین , آیفون , IOS , آموزش مجازی 4.25 : 2170
4.25دیکشنری آنلاین تحلیلگران (معنی unknown quantity)
دیکشنری تحلیلگران (وب اپلیکیشن، ویژه کاربران آیفون، IOS) | دیکشنری آنلاین تحلیلگران (معنی unknown quantity) | موسس و مدیر مسئول :