unheard

adjective

1. not heard; not perceived by the ear.
2. not given a hearing or audience.
3. Archaic. unheard-of.

adjective

1. not heard; not perceived by the ear
2. not listened to or granted a hearinghis warning went unheard
3. archaic unheard-of

adj.c.1300 “not detected by sense of hearing,” from un- (1) “not” + past participle of hear. Meaning “unknown, new” is attested from late 14c. (Old English had ungehered in this sense). Usually with of since 1590s. Cf. Old Norse oheyrðr, Danish uhørt, Middle Dutch ongehoort, Old High German ungehoret.