unheard-of Synonyms

off beaten path undetected unexposed unthinkable unbelievable unnamed unidentified little-known weird unusual unprecedented unfamiliar unimaginable unapprehended unsung unrenowned unfamed unexplored unexplained undiscovered undesignated uncharted uncelebrated unascertained unknown unique nameless innominate incredible inconceivable incomprehensible flasher fantastic extraordinary exceptional bizarre new novel obscure uncommon strange singular remarkable rare phenomenal peculiar outrageous outlandish odd anonymous