‘损人利己’ literally means ‘harm others and benefit oneself’. It describes selfish, unethical behavior where someone gains advantage by causing harm, loss, or inconvenience to others. Each character contributes directly: 损 (sǔn) means ‘to damage’ or ‘to harm’, 人 (rén) means ‘people’ or ‘others’, 利 (lì) means ‘to benefit’ or ‘to profit’, and 己 (jǐ) means ‘oneself’. Together, the phrase forms a compact, four-character idiom (chéngyǔ) that carries strong moral disapproval.

This term is commonly used in formal speech, writing, and moral education to condemn exploitative, dishonest, or ruthless conduct — such as cheating on exams to get ahead, stealing credit for a colleague’s work, or cutting corners in manufacturing at the expense of consumer safety. While it functions grammatically as both a noun (e.g., ‘this is pure 损人利己’) and an adjective (e.g., ‘a 损人利己 act’), it is rarely used positively and almost always implies criticism or condemnation.