相称 (xiāng chèn) is an adjective meaning 'proportionate' or 'appropriate' — describing a harmonious, balanced relationship between two or more things in size, appearance, function, or status. The character 相 means 'mutual' or 'each other', while 称 means 'to weigh', 'to match', or 'to be fitting'; together, they convey the idea of mutual suitability or measured balance. It often appears in contexts where visual harmony, social appropriateness, or functional compatibility is emphasized — for example, when describing clothing that suits a person’s build, a title that matches someone’s role, or physical features that align naturally.

This word is commonly used in both formal and everyday speech, especially when evaluating aesthetic or relational fit. It frequently follows the structure 'A 与 B 相称' ('A is proportionate/appropriate to B') or appears after a noun as a predicate: '很相称' ('very fitting'). Unlike verbs such as 匹配 (pǐpèi), 相称 carries a subtle connotation of natural, inherent harmony rather than mechanical matching.