sis C2+ Topic:Family & Relationships US /sɪs/ UK /sɪs/ See IPA manual Homophones siss /sɪs/ Minimal pairs Sounds like sith /θ/ vs /s/ Meanings 1 noun an informal term for sister Hey sis, can you pass me the salt? Thesaurus Synonyms 1 noun · an informal term for sister sistersibling ↔ Opposites bro Word family Related forms sistersisterhoodsissy Etymology AI details A shortened, colloquial form of sister, from Old English sweostor, of Germanic origin. sweostor Old English View etymology graph -> Topics Family & Relationships Register & Style External links Cambridge Dictionary Wiktionary Google Images # sis **Type:** Word **Level:** C2+ **Part of speech:** noun **IPA (US):** /sɪs/ **IPA (UK):** /sɪs/ ## Meanings 1. an informal term for sister ## Examples - Hey sis, can you pass me the salt? ## Synonyms - sister - sibling ## Antonyms - bro ## Related Forms - sister - sisterhood - sissy ## Roots and Affixes - Root: sweostor ## Etymology A shortened, colloquial form of sister, from Old English sweostor, of Germanic origin. ## AI Etymology Sis is from a shortened, colloquial form of sister, from Old English sweostor, of Germanic origin. The historical chain includes Old English sweostor. Morphologically, sis is best read as borrowing, yielding an English noun shaped by both form history and later usage. In current English it functions as a noun, with the sense "an informal term for sister". related forms include sister, sisterhood, and sissy. The result is an English noun whose etymology preserves the older forms while supporting the word's specialized modern meaning. ## Topics - Family & Relationships - Register & Style markdown