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Added 9 October 2026

sib

/sɪb/ noun

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about sib at Wordnik → Where our words come from →

A person's brother or sister.
One related by blood or origin; especially on sharing an ancestor with another.

Origin

From Middle English sib, from Old English sibb (“related, akin, sib”), from Proto-Germanic *sibjaz (“related”), from Proto-Indo-European *sebʰ-, *swebʰ- (“one's own”). Cognate with West Frisian besibbe (“related”), Middle Dutch sibbe (“related”), Middle Low German sibbe (“related”), Middle High German sippe (“related”), Icelandic sifi (“related”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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