Meaning & Definition of word "Unbeknownst"

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    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.