transcription, транскрипция: [ ʌnbɪnoʊn ]
Note: The form 'unbeknownst' / ʌnbɪnoʊnst / is also used.
If something happens unbeknown to you or unbeknownst to you, you do not know about it.
I am appalled that children can mount up debts unbeknown to their parents...
Unbeknownst to her father, she began taking dancing lessons.
PREP-PHRASE