206 entries under strengthen topic. ×

2
redouble(verb, advance, increase, raise, rise)
2
revitalize(verb, encourage, excite, prepare, cheer)
2
second(verb, support, hold, help, accept)
2
sharpen(verb, advance, increase, develop, raise)
2
soup up(verb, expression, support, increase, continue)
2
spike(verb, increase, raise, severe, continue)
2
stand up for(verb, expression, idiom, support, hold)
2
stick up for(verb, expression, idiom, support, hold)
2
stimulate(verb, support, make, help, drive)
2
stretch(verb, take, cover, increase, open)
2
stroke(verb, support, increase, honor, praise)
2
vitalize(verb, excite, animate, thrill)
1
abide by(verb, expression, support, encourage, favor)
1
accent(verb, increase, raise, severe, aggravate)
1
accentuate(verb, increase, raise, severe, exercise)
1
add fuel(verb, expression, increase, raise, severe)
1
add fuel to fire(verb, expression, idiom, support, increase)
1
ally(verb, support, encourage, favor, uphold)
1
angel(verb, support, encourage, favor, uphold)
1
bankroll(verb, support, encourage, favor, uphold)
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APASmart Define. (2015). boost thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/boost/thesaurus/synonyms
ChicagoSmart Define. 2015. "boost thesaurus" https://smartdefine.org/boost/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, boost thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/boost/thesaurus/synonyms>.
MLASmart Define. "boost thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/boost/thesaurus/synonyms>