Chinese character 姒

姒 is an old Chinese kinship term for a senior woman.

An inscription on an ancient bronze vessel preserves 姒 in the clan name 衛姒鬲. Older kinship uses also apply it to an older sister or to a woman’s place in a marriage relationship.

姒娣 pairs senior and junior women in old co-wife vocabulary; later use can also refer to brothers’ wives. The surrounding relationship determines which reading fits.

Why does 姒 sound so old?

姒 belongs to classical kinship vocabulary.

姒 and 娣 name relative positions, not generic words for woman, wife, or sister. In an old in-law usage, 姒 is what a younger brother’s wife calls the elder brother’s wife; among co-wives, it marks the senior woman.

Use it in a quotation, historical explanation, genealogy, or deliberately archaic writing when that relationship is intended. In ordinary modern chat it sounds marked and may need explanation.

What if someone sent 姒?

A lone 姒 needs context before you read it as a relationship.

It may be a name, a quotation, or part of a kinship compound; the character alone does not tell you which. If the message gives no clue, ask the sender.