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Unbeknownst (adverb)
without the knowledge of
“He went home early, unbeknownst to his mother.”
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Unbeknown (adjective)
Not beknown.
Wiktionary
By Jaxson
Unbeknownst (adverb)
without the knowledge of
“He went home early, unbeknownst to his mother.”
Unbeknown (adjective)
Not beknown.