20
fabulous(adjective, good, cool, great, pleasant)
20
superb(adjective, good, cool, great, excellent)
19
first-rate(adjective, good, cool, great, excellent)
19
groovy(adjective, good, cool, great, excellent)
19
excellent(adjective, good, cool, great, fine)
19
wave(noun, verb, move, increase, excitement)
18
augment(noun, verb, act, advance, increase)
18
grand(adjective, cool, great, excellent, perfect)
18
great(adjective, good, cool, excellent, fine)
18
stretch(verb, stop, close, set, cover)
17
bulge(noun, verb, advance, increase, raise)
17
dilate(verb, set, cover, advance, increase)
17
first-class(adjective, good, cool, great, excellent)
16
bully(adjective, good, cool, great, informal)
16
balloon(verb, phrasal verb, increase, issue, grow)
16
bloat(verb, set, cover, increase, open)
16
cool(adjective, good, kind, great, pleasant)
16
dude(noun, fop)
16
elegant(adjective, great, excellent, superb, super)
16
spread(noun, verb, cover, advance, increase)
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APASmart Define. (2016). swell thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/swell/thesaurus/synonyms
ChicagoSmart Define. 2016. "swell thesaurus" https://smartdefine.org/swell/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, swell thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/swell/thesaurus/synonyms>.
MLASmart Define. "swell thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/swell/thesaurus/synonyms>