American Dictionary

Define dictionary terms easily in our powerful online English dictionary.

Searching for...

No matching words found

Try a different search term or browse the dictionary

Definition unheard-of in American English

unheard-of adjective

adjective
1

something that is unheard-of is very unusual or has never happened before

Example

This was an unheard-of piece of luck.

Synonyms and related words
Definition unheard-of in American English