unheard of
Totally without precedent
Unheard of describes something so unusual or unprecedented that no one has encountered it before: Thirty years ago, working from home was almost unheard of.
The phrase often expresses shock or indignation at a breach of norms: Leaving without saying goodbye? That's unheard of!
Something unheard of may be remarkably good or remarkably bad—context determines which.
- newRecently created or begun
- unimaginableBeyond mental conception
- first-timeNever previously experienced
- strangeUnusual or unfamiliar
- inconceivableBeyond mental grasp
novel · extraordinary · one of a kind · unknown · astonishing · incredible · exceptional · off the charts · uncharted · unfamiliar · implausible · out of the question · unthinkable · hard to believe · groundbreaking · anomalous · out of left field · unusual
unheard ofcommon
Widespread and unremarkable
commonplace · everyday · familiar · ordinary · well-known
unheard ofprecedented
Having prior examples
expected · established · unsurprising · unremarkable · normal
hear, hearing, unheard, unheard-of, misheard, hear of, unhearable