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unheard-of

adjective

1 unheard-of

Previously unknown.

Roget 192: large, big; great etc. (in quantity) 31; considerable, bulky, voluminous, ample, massive, massy; capacious, comprehensive; ... show more


Moby thesaurus: disgraceful, extreme, inconceivable, nameless, obscure, offensive, outlandish, outrageous, shocking, unbelievable, unfamiliar, unidentified, unimaginable, unimagined, unknown, unprecedented, unsung, unthinkable, unusual.

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