11
expand(verb, increase, open, develop, rise)
11
plump(verb, adjective, increase, rise, issue)
10
fill out(verb, expression, phrasal verb, increase, open)
10
increase(verb, increase, open, develop, rise)
10
swell(verb, increase, open, develop, extend)
9
amplify(verb, increase, open, develop, rise)
9
augment(verb, increase, open, develop, rise)
9
extend(verb, increase, open, develop, rise)
9
feed(verb, sustain, grow, feed, stuff)
8
broaden(verb, increase, open, develop, extend)
8
enlarge(verb, increase, open, develop, rise)
8
grow(verb, increase, open, develop, rise)
8
inflate(verb, increase, open, develop, extend)
7
distend(verb, increase, open, develop, rise)
7
fat
7
fatten up(verb, expression, phrasal verb, sustain, feed)
7
stuff(verb, give, maintain, deliver, sustain)
6
batten(verb, advance, rise, grow, score)
6
bloom(verb, advance, rise, grow, score)
6
blossom(verb, advance, rise, grow, score)
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APASmart Define. (2015). fatten thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/fatten/thesaurus/synonyms
ChicagoSmart Define. 2015. "fatten thesaurus" https://smartdefine.org/fatten/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, fatten thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/fatten/thesaurus/synonyms>.
MLASmart Define. "fatten thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/fatten/thesaurus/synonyms>