UNHEARD

of adj. 1 unknown, unfamiliar, obscure, unidentified, nameless, unsung She is busy trying to promote some unheard-of sculptor 2 unimaginable, undreamed of or undreamt of, unprecedented, unimagined, unbelievable, inconceivable, unusual They took the unheard-of step of requiring that refunds be paid Her starting salary is an unheard-of $100,000. 3 shocking, offensive, outrageous, disgraceful, extreme, unthinkable, outlandish The victims were subjected to unheard-of tortures