5
premier(adjective, lead, head, master, boss)
5
tiptop(adjective, sound, top, excellent, fine)
4
apical(adjective, top, excellent, lead, fine)
4
big(adjective, important, large, main, chief)
4
boss(adjective, lead, important, head, master)
4
capital(adjective, excellent, lead, head, master)
4
crest
4
elder(adjective, rank, post, status, age)
4
most importantly
4
superlative(top, unparalleled, topmost, prizewinning, out-of-this-world)
4
top-notch(adjective, sound, top, excellent, fine)
4
utmost
3
capping(adjective, summit)
3
cardinal(adjective, lead, head, master, boss)
3
climax
3
culmination
3
elderborn(adjective, rank, post, status, age)
3
eldest(adjective, rank, post, status, age)
3
extreme(adjective, big, large, summit, bigger)
3
first-born(adjective, rank, post, status, age)
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APASmart Define. (2015). uppermost thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/uppermost/thesaurus/synonyms
ChicagoSmart Define. 2015. "uppermost thesaurus" https://smartdefine.org/uppermost/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, uppermost thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/uppermost/thesaurus/synonyms>.
MLASmart Define. "uppermost thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/uppermost/thesaurus/synonyms>