U+9F7C "齼" CJK Unified Ideograph-# Unicode Character

U+9F7C "齼" CJK Unified Ideograph-# is a rare and complex Chinese character that historically relates to the sensation of teeth being set on edge or a rough, grating feeling, often associated with tasting something overly sour or astringent, like unripe fruit. It is composed of the radical for "tooth" or "teeth" (齙) combined with elements that contribute to its meaning of sharpness or irritation. This character is not commonly used in modern Chinese writing, appearing mostly in classical or specialized literary contexts to describe an unpleasant oral or tactile sensation. Its formal classification under the CJK (Chinese, Japanese, Korean) Unified Ideographs block means it is encoded for digital representation across multiple East Asian languages, though it remains obscure in everyday usage.