羞愧 (xiū kuì) is a compound word expressing a deep, morally weighted feeling of shame and remorse—typically arising when one recognizes having done something wrong, dishonorable, or socially unacceptable. The character 羞 (xiū) conveys embarrassment or disgrace before others, while 愧 (kuì) emphasizes inner guilt or regret for violating one’s own moral standards or others’ expectations. Together, they form a stronger, more introspective emotional state than either character alone.

This word is commonly used in formal speech, literature, and reflective contexts—not casual daily chat—often describing reactions to serious ethical lapses, broken promises, or public failures. It implies both external judgment (shame) and internal self-reproach (guilt), making it especially appropriate when someone feels personally responsible and genuinely contrite. While it can function as a noun (e.g., 'a wave of shame'), it frequently appears as a verb meaning 'to feel ashamed and remorseful'.