senior
se-nior
noun
An older person, especially a final-year student or elderly citizen.
"Discounts are available for seniors."
adjective
Higher in rank, position, or authority than others.
"She holds a senior management role."
Thesaurus
Synonyms: elder, old, older, aged, elderly, major, superior, higher-ranking, precedential, ranking, sr.
Antonyms: junior