one's superior; one's boss; one's senior
Formal, respectful term for a person of higher rank or status, such as a boss, teacher, or elder. Often used in business or traditional contexts.
I will follow my superior's instructions.
He always respects his superiors.
Compound of 尊 (そん, 'revered') and 上 (じょう, 'above'), literally meaning 'revered superior'. The exact historical derivation is uncertain, but it follows a common pattern of Sino-Japanese honorific terms.