U+5638 "嘸" CJK Unified Ideograph-# Unicode Character
U+5638 "嘸" CJK Unified Ideograph-# is a Chinese character (hanzi), used historically in both Classical and vernacular Chinese, that carries a complex range of meanings primarily related to negation or questioning. It is most often pronounced "wǔ" or "fǔ" in Mandarin and serves as an archaic or dialectal variant for words meaning "no," "not," or expressing rhetorical doubt, similar to the function of contemporary negatives. In classical texts, it also appears as a phonetic borrowing in names or transliterations, and its structure combines the mouth radical (口, suggesting speech or sound) with a phonetic component. While not common in modern standard written Chinese, it retains significance in historical literature, traditional poetry, and certain regional dialects or ritual contexts where older character forms are preserved.