Unheard-of definitions

ŭn-hûrd'ŭv', -ŏv'
Not previously known; unknown.
adjective
30
0
Without precedent; unparalleled.
adjective
27
0
Highly offensive; outrageous or brazen.
adjective
24
0
Not heard of before; unprecedented or unknown.
adjective
17
0
Unacceptable or outrageous.

Unheard-of effrontery.

adjective
14
0
Previously unknown; unprecedented.
adjective
0
0