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