Meaning & Definition of word "Unbeknownst"

Unbeknownst

/ˌənbɪˈnoʊn(d)st/

adverb:

  • 1. Without the knowledge of; unknown to.
    • Example: Unbeknownst to her, he had planned a surprise party for her birthday.
  • 2. In a way that is not known or perceived.
    • Example: They continued their conversation, unbeknownst to the fact that they were being watched.
  • 3. Without someone's knowledge.
    • Example: Unbeknownst to him, his friends were all in on the secret.
  • 4. Unknown to someone.
    • Example: Unbeknownst to the team, their project had already been approved.

Etymology

Late 17th century; originally unknown.

Common Phrases and Expressions

unbeknownst to me:

Without my knowledge or awareness.

unbeknownst to the public:

Unknown to the general population.

unbeknownst to him:

Not known by him.

Related Words

unknown:

Not known or familiar.

ignorant:

Lacking knowledge or awareness.

Slang Meanings of unbeknownst

Meaning: Off the radar

Example Sentence: The whole operation was off the radar for everyone involved.

Meaning: Under the radar

Example Sentence: She was dating someone under the radar, unbeknownst to her friends.