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Definition of undefined

undefined

/ˌʌndɪˈfaɪnd/
un · de · fined
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undefined Lexical Profile

undefined Game Scores & Validity

• adjective

1

Not clear or precisely defined; lacking definite limits, form, or explanation.

Example

"The boundaries between the two administrative districts remained largely undefined for decades."

2

Having no valid meaning, assigned value, or interpretation within a mathematical system or computer program (such as the result of dividing a number by zero).

Example

"In standard arithmetic, the expression of any number divided by zero is considered undefined."

Synonyms
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Antonyms
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• Rhymes for undefined

• Nearby Words

undefiled
undefinable
undefinably
undefined
undelayed
undelete
undeleted

Cite this Entry

Wordmom. (2026). Definition of Undefined. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/undefined
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