5
intensify(verb, support, increase, develop, establish)
5
nourish(verb, hold, keep, maintain, encourage)
5
revive(verb, raise, stimulate, lift, refresh)
5
stimulate(verb, excite, boost, strengthen, animate)
5
supplement(verb, support, help, advance, increase)
5
temper(verb, close, set, fix, settle)
5
uphold(verb, support, hold, help, fix)
4
back(verb, support, keep, develop, maintain)
4
back up(verb, expression, phrasal verb, support, increase)
4
buck up(verb, expression, phrasal verb, encourage, raise)
4
equip(verb, make, place, set, fix)
4
fort
4
inspirit(verb, encourage, raise, stimulate, excite)
4
punch up(verb, expression, phrasal verb, support, strong)
4
reassure(verb, support, develop, promote, encourage)
4
recruit
4
reinvigorate(verb, revive, refresh)
4
step up(verb, expression, phrasal verb, support, strong)
4
substantiate(verb, support, increase, establish, extend)
3
add to(verb, expression, support, help, charge)
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APASmart Define. (2015). fortify thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/fortify/thesaurus/synonyms
ChicagoSmart Define. 2015. "fortify thesaurus" https://smartdefine.org/fortify/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, fortify thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/fortify/thesaurus/synonyms>.
MLASmart Define. "fortify thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/fortify/thesaurus/synonyms>