100 entries under fortify topic. ×

6
corroborate(verb, support, increase, establish, extend)
6
deepen(verb, advance, increase, raise, rise)
6
gird(verb, support, close, set, fix)
6
multiply(verb, support, advance, increase, develop)
5
step up(verb, expression, support, advance, increase)
5
temper(verb, close, set, fix, settle)
4
concentrate(verb, increase, develop, secure, raise)
4
empower(verb, support, increase, establish, extend)
4
substantiate(verb, support, increase, establish, extend)
3
add(verb, support, increase, establish, extend)
3
extend(verb, support, advance, increase, develop)
3
renew(verb, support, fix, increase, encourage)
3
secure(verb, support, develop, join, unite)
3
thicken(verb, close, set, fix, advance)
2
set up(verb, expression, phrasal verb, support, increase)
2
amalgamate(verb, close, set, fix, develop)
2
animate(verb, raise, stimulate, excite, boost)
2
anneal(verb, support, close, set, fix)
2
cement(verb, close, set, fix, develop)
2
compact(verb, close, set, fix, develop)
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APASmart Define. (2015). reinforce thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/reinforce/thesaurus/synonyms
ChicagoSmart Define. 2015. "reinforce thesaurus" https://smartdefine.org/reinforce/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, reinforce thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/reinforce/thesaurus/synonyms>.
MLASmart Define. "reinforce thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/reinforce/thesaurus/synonyms>