- 充足理由律 chōngzúlǐyóulǜ law of sufficient reasonThe law of sufficient reason (a principle of logic); sufficient grounds (in a legal context)
- 有理由 yǒulǐyóu to have reasonto have reason; there are grounds or justifications to do something
- 正当理由 zhèngdànglǐyóu proper reasonproper reason; reasonable grounds
- 理由书 lǐyóushū statement of groundsA document containing a written statement of grounds or reasons for a certain action, often used in legal or official contexts.
