'Lǎo yé' is a historical and formal term of address meaning 'master' or 'sir', used primarily in pre-modern China to refer respectfully to the male head of a household, a nobleman, or a high-status man—especially by servants, subordinates, or commoners. The character 老 (lǎo) conveys seniority, respect, and authority, while 爷 (yé) is an honorific suffix denoting status and senior male rank, akin to 'lord' or 'gentleman'. Together, they form a compound that emphasizes both age-based reverence and social hierarchy.

This term appears frequently in classical literature, historical dramas, and period films—such as when a servant addresses his employer or a court official bows before a magistrate. It is not used in modern daily speech except for stylistic effect (e.g., role-play, satire, or theatrical performance). Unlike neutral terms like 先生 (xiānsheng), 老爷 carries strong connotations of feudal social structure and power imbalance.