Synonyms for Senior:
authoritative, important, commanding, motivational, leading, powerful, masterful, influential, supreme, controlling, prejudicial, ruling, predominant.
principal, head, commanding, ruling, Presiding, star, master, directing, leading, governing.
•older or of higher rank (adjective)
chief, higher, leading, superior, more advanced.
champion, chosen, crowning, sovereign, supreme, furthermost, commanding, elite, choice, zenith, best, A 1, eminent, Headmost, ascendant, maximum, predominant, paramount, dominant, chief, uppermost, master, leading, furthest, king, signal, foremost, most, ruling, better, controlling, above, consummate, superior, quintessential.
experienced, expert, patriarchal, veteran, master.
n.below, born, common, B-list, genteel, good, A-list. age, the grey pound, the gray dollar, old age, decrepitude, ageing, advanced, new, sexagenarian. aging, ancient, decrepit, venerable, geriatric, higher, over. BMP, campus, auditor, COED, alumnus, Big Man on Campus, fresher, alum, dropout, alumna. the aged, oldster, octogenarian, the elderly, nonagenarian, the old, old folk, centenarian, pensioner, methuselah. •elder (noun)
more advanced, next higher in rank, of greater dignity, next older, higher in rank, of advanced standing.
commander, captain, lord, headmaster, mandarin, proprietress, star, headmistress, executive, head, squire, officer, mahatma, titleholder, director, guru, abbot, commandant, quartermaster, dean, sire, proprietor, manager, maestro, landlady, mother, ruler, principal, kingpin, president, governor, landlord, authority, leader.
•older person (noun)
ancient, head, old-timer, old folk, oldster, patriarch, pensioner.
•senior citizen (noun)
old hand, old-timer, patriarch, gray-beard, old soldier.