unheard-of
[uhn-
hurd
-uhv, -ov, -
uh
v]
/ʌnˈhɜrdˌʌv, -ˌɒv, -əv/
adjective
1.
that was never heard of; unknown:
an unheard-of artist.
2.
such as was never known before; unprecedented:
an unheard-of salary.
3.
shocking or outrageous:
unheard-of conduct.
Origin
1585-95
British Dictionary definitions for
unheard of
unheard-of
adjective
1.
previously unknown:
an unheard-of actress
2.
without precedent:
an unheard-of treatment
3.
highly offensive:
unheard-of behaviour
Idioms and Phrases with
unheard of
unheard of
Very unusual, extraordinary, as in
It's unheard of to have all one's money refunded two years after the purchase
. This expression alludes to a circumstance so unusual that it has never been heard of.
[
Late 1500s
]