'Wú yóu' (无尤) is a classical Chinese expression meaning 'without blame' or 'blameless'—describing a state of moral integrity where one bears no fault, regret, or reproach. The character 无 (wú) means 'not' or 'without,' and 尤 (yóu) originally referred to 'fault,' 'offense,' or 'excess'; together, they form a compact, literary term emphasizing inner purity and faultlessness in action or intention.

This phrase appears frequently in classical texts like the Analects and Dao De Jing, often describing ideal conduct—especially when one acts with sincerity, humility, and alignment with natural or ethical principles. It’s not used in casual speech but appears in formal writing, philosophical discourse, poetry, and moral exhortations. While it carries a quiet, reflective tone, it conveys deep ethical confidence rather than mere innocence—it implies one has done all that was right and just, leaving no grounds for criticism.