unbeknown to

Definition of unbeknown to

chiefly British

  1. :  without being known about by (someone) Unbeknown to the students, the teacher had entered the room.

Word by Word Definitions

unbeknownstplay unbeknown
  1. :  unknown

Seen and Heard

What made you want to look up unbeknown to? Please tell us where you read or heard it (including the quote, if possible).