78 entries under increase topic. ×

41
strengthen(verb, form, support, make, close)
28
brace(noun, verb, form, support, make)
23
reinforce(verb, support, close, help, set)
18
invigorate(verb, support, encourage, raise)
18
energize(verb, support, encourage, raise)
17
support(verb, help, fix, advance, strong)
16
buttress(verb, support, close, set, fix)
13
steel(verb, form, support, make, close)
13
confirm(verb, support, strong, encourage)
13
harden(verb, support, close, set, strong)
10
bolster(verb, support, fix, develop)
10
prop(noun, verb, support, fix, strong)
10
toughen(verb, support, close, set, fix)
9
build up(verb, expression, phrasal verb, form, support)
9
renew(verb, support, encourage, raise)
9
stiffen(verb, support, close, set, fix)
9
sustain(verb, support, hold, develop)
8
beef up(verb, expression, phrasal verb, support)
8
boost(verb, support, develop, encourage)
8
empower(verb, support, establish, extend)
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APASmart Define. (2015). fortify thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/fortify/thesaurus/synonyms
ChicagoSmart Define. 2015. "fortify thesaurus" https://smartdefine.org/fortify/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, fortify thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/fortify/thesaurus/synonyms>.
MLASmart Define. "fortify thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/fortify/thesaurus/synonyms>