年上 (としうえ) Japanese meaning | KotomoraCommon wordJLPTN2Freq.FrequencyTop 10,000 Meanings
1
noun, noun which may take the genitive case particle 'no'
older; senior
Refers to someone older in age or more senior in a group; commonly used with の to modify nouns.
う
べき
だ
。
You should use polite language with older people.