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Sibling vs Undefined - What's the difference?

sibling | undefined |

As a noun sibling

is a person who shares same parents one's brother or sister.

As an adjective undefined is

lacking a definition or value.

sibling

English

Noun

(wikipedia sibling) (en noun)
  • A person who shares same parents. One's brother or sister.
    • None of my siblings are married yet. .

    Derived terms

    * nibling * siblinghood *stepsibling *adoptive sibling *milk sibling *full sibling *siblingly *little sib *half sib *stepsib *sib-in-law *fullsib *foster sib *adoptive sib

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined