875 entries under verb topic. ×

3
further(support, advance, increase, develop)
3
go up
3
heat up(expression, support, increase, raise)
3
indurate(dull, close, set, fix)
3
inure(dull, develop, rough, adjust)
3
make stronger(expression, idiom, support, powerful)
3
modulate
3
power(control, do, invigorate, energize)
3
recondition(fix, cover, encourage, return)
3
recover(fix, encourage, raise, gain)
3
regenerate(powerful, revive, fortify, brace)
3
repair(fix, cover, encourage, raise)
3
resurrect(encourage, stimulate, restore, arouse)
3
set(support, hold, close, fix)
3
settle(form, hold, make, close)
3
shoot up(expression, get, increase, promote)
3
string(hold, secure, join, fasten)
3
thicken(close, set, fix, advance)
2
abet(support, develop, promote, encourage)
2
accelerate(increase, develop, promote, stimulate)
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APASmart Define. (2016). strengthen thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/strengthen/thesaurus/synonyms
ChicagoSmart Define. 2016. "strengthen thesaurus" https://smartdefine.org/strengthen/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, strengthen thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/strengthen/thesaurus/synonyms>.
MLASmart Define. "strengthen thesaurus" 3 March 2016. Web. 29 September 2026. <https://smartdefine.org/strengthen/thesaurus/synonyms>