Unbeknown-Unbeknownst | Commonly Confused Words
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Unbeknown vs. Unbeknownst

Unbeknown

/ˌʌnbɪˈnəʊn/
Something that is unknown to someone or something happening without someone's knowledge.

Examples:

She went to the party unbeknown to her parents.There was a surprise waiting, unbeknown to the guests.Unbeknown to us, the plan was already in action.

Synonyms:

Antonyms:

Unbeknownst

Not known or unnoticed by someone

Examples:

Unbeknownst to him, they planned a surprise party.She slipped away, unbeknownst to the bustling crowd.Unbeknownst to many, the artist lived in seclusion.

Synonyms:

Antonyms:

Ways to tell them apart:

etymology
  • Unbeknown and unbeknownst both mean without someone's knowledge, but they differ in formality and usage.
  • Unbeknown is the more common version used in modern English, and is typically used on its own.
  • Unbeknownst tends to be used in older literature or in a more playful or dramatic context.
  • Remember that both words involve some sort of hidden or secret action.
  • If in doubt, unbeknown tends to be the safer choice in professional or formal writing.
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