sib

Etymology

Came into English via 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’), and Icelandic sifi (‘related’).