unknown quantitynoun [ C usually singular ]
uk/ˌʌn.nəʊn ˈkwɒn.tɪ.ti/us/ˌʌn.noʊn ˈkwɑːn.t̬ə.t̬i/C2 a person or a thing whose abilities, powers, or effects are not yet known:
The third candidate for the seat is a relatively unknown quantity.
Thesaurus: synonyms and related words
Unknown and unfamiliar
- a pig in a poke idiom
- alien
- foreign
- hidden
- lesser-known
- obscure
- obscurity
- pig
- shadowy
- strange
- strangeness
- TBD
- uncharted
- uncommon
- unexplored
- unfamiliar
- unheard-of
- unused
- vocabulary
- wild card
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