unbeknownst
adjective
un·be·knownst
ˌən-bi-ˈnōn(t)st
variants
or less commonly unbeknown
1
: happening or existing without the knowledge of someone specified
—usually used with to
unbeknownst to us rumors were flying
2
: unknown
Love words? Need even more definitions?
Merriam-Webster unabridged
Share