unbeknownst to

idiom
Updated on: 15 Nov 2017

Definition of unbeknownst to

chiefly US
: without being known about by (someone)
  • Unbeknownst to the students, the teacher had entered the room.

Word by Word Definitions

unbeknownst play
  1. : happening or existing without the knowledge of someone specified

  2. : unknown


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