UNHEARD-OF


Meaning of UNHEARD-OF in English

Pronunciation: - ˌ ə v, - ˌ äv

Function: adjective

Date: 1592

: previously unknown especially : UNPRECEDENTED <moving at unheard-of speeds>

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.