unbeknown

[ uhn-bi-nohn ]

adjective
  1. unknown; unperceived; without one's knowledge (usually followed by to).

Origin of unbeknown

1
1630–40; un-1 + beknown (late Middle English beknowe, past participle of beknowen); see be-, known
  • Also un·be·knownst [uhn-bi-nohnst]. /ˌʌn bɪˈnoʊnst/.

Words Nearby unbeknown

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use unbeknown in a sentence

  • Without one moment's warning, and unbeknown even to her husband, the lady went to the station and entered the train for New York.

    The Mapleson Memoirs, vol II | James H. Mapleson

British Dictionary definitions for unbeknown

unbeknown

/ (ˌʌnbɪˈnəʊn) /


adverb
  1. (sentence modifier foll by to) without the knowledge (of a person): unbeknown to him she had left the country Also (esp Brit): unbeknownst

adjective
  1. (postpositive usually foll by to) rare not known (to)

Origin of unbeknown

1
C17: from the archaic beknown known; see be-, know

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012