2
nonpareil
2
plebe(noun, junior)
2
preceding(higher, upper, abovementioned, oldest)
2
preexistent(higher, upper, abovementioned)
2
prior
2
ripened
2
sachem
2
superannuated(tired, gray, mature, aged, older)
2
undergrad
2
upperclassman(noun, junior)
1
OAP
1
abbot(noun, master)
1
aboon(adjective, top, high, over, up)
1
absolute
1
acceptable(adjective, comfortable, wealth, safe, worthy)
1
achieved(adjective, comfortable, wealth, safe, worthy)
1
admirable(good, better, advanced, greater, finer)
1
adult
1
advance
1
aging
10 years ago|14k views|share |citing 
APASmart Define. (2016). senior thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/senior/thesaurus/synonyms
ChicagoSmart Define. 2016. "senior thesaurus" https://smartdefine.org/senior/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, senior thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/senior/thesaurus/synonyms>.
MLASmart Define. "senior thesaurus" 30 March 2016. Web. 24 September 2026. <https://smartdefine.org/senior/thesaurus/synonyms>