English dictionary
unheard-of meaning and definition
Definition and meaning of unheard-of at MeaningMonkey.org. unheard-of meaning and definition in the English Dictionary.UNHEARD-OF adjective
Definition of unheard-of (adjective)
- previously unknown
- "a first novel by an unheard of writer"; "developments on an unheard-of scale"
Source: Princeton University Wordnet