Unbeknownst

//ˌʌnbɪˈnoʊnst// adj

adj ·Rare ·Advanced level

Definitions

Adjective
  1. 1
    Without the knowledge of. not-comparable, with-to

    "He went home early, unbeknownst to his mother."

Adjective
  1. 1
    (usually used with ‘to’) occurring or existing without the knowledge of wordnet
Adverb
  1. 1
    without someone's knowledge wordnet

Synonyms

All synonyms
unbeknownunbeknownunbeknownunbeknownunknownunknown

Example

More examples

"Unbeknownst to him, at the space hotel, there was a musically complimented Mexican restaurant surrounded by gigantic cages full of tropical parrots and other birds."

Etymology

Variant of unbeknown with excrescent -st.

More for "unbeknownst"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.