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Word of the Day Tuesday, June 9, 2026

undefined

/ˌʌndɪˈfaɪnd/ adjective, verb · British & US
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What does undefined mean?

adjective, verb

Not clearly defined or explained; lacking a specific meaning. To declare or state that something is not defined or explained.

Example

"The concept of infinity is undefined in mathematics."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for undefined

Antonyms of undefined

Rhymes with undefined

Etymologically related