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Definition of sibling

sibling

/ˈsɪb.lɪŋ/
sib · ling
Plural:siblings
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sibling Lexical Profile

sibling Game Scores & Validity

• noun

1

A brother or sister; a person who shares at least one biological or adoptive parent with another.

Example

"Growing up as the youngest of four siblings taught her how to negotiate and share from an early age."

2

In computing and linguistics, a node in a hierarchical tree structure that shares the exact same immediate parent node as another node.

Example

"In the document object model, all list items inside the same unordered list are treated as siblings."

Synonyms
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Antonyms
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• Rhymes for sibling

• Nearby Words

siberian iris
siberian tiger
sibia
sibling
sic
sichuan
sicilian

Word Origin & Etymology

From Old English sibling ('relative, kinsman'), formed from sibb ('kinship, relationship') and the suffix -ling. After falling out of general use in Middle English, the word was revived by anthropologists and geneticists in 1903 specifically to mean a brother or sister.

Cite this Entry

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