unheard-of
adjective
-ˌäv\
Definition of unheard-of
Synonyms & Antonyms for unheard-of
Synonyms
fresh, new, novel, original, strange, unaccustomed, unfamiliar, unknown, unprecedented
Antonyms
familiar, hackneyed, old, time-honored, tired, warmed-over
Visit the Thesaurus for More
Keep scrolling for more
Keep scrolling for more
More Definitions for unheard-of
unheard-of
adjective
English Language Learners Definition of unheard-of
: not known to have existed or happened before : very unusual
See the full definition for unheard-of in the English Language Learners Dictionary
unheard-of
adjectiveKids Definition of unheard-of
Keep scrolling for more
Comments on unheard-of
What made you want to look up unheard-of? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Homophone Quiz
-
- In order to judge how people felt, the senator's office hired a firm to take a
______.
Test your visual vocabulary with our 10-question challenge!
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
-
Homophone Quiz
More/moor than/then two/too/to.
Take the quiz -
Liar, Liar Quiz
Test your knowledge of words for lies, liars, and those being lied to. In other words, everyone.
Take the quiz -
Name That Thing
Test your visual vocabulary with our 10-question challenge!
Take the quiz -
SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share unheard-of
Resources for unheard-of