87 entries under verb topic. ×

8
strengthen(encourage, powerful, hearten)
7
fortify(strong, encourage, secure, raise)
5
escalate(stop, drop, increase, slow)
4
enhance(hurt, reduce, raise, rise)
4
harden
4
intensify(dull, severe, slow)
4
invigorate(dull, hurt, raise, rise)
3
augment(hurt, reduce, diminish)
3
bolster(stop, undermine)
3
build up(expression, phrasal verb, hurt, raise)
3
concentrate
3
confirm
3
consolidate(hurt, decrease)
3
energize(calm, dull, raise, rise)
3
grow(raise, rise, extend, fortify)
3
improve(stop, drop, decline, raise)
3
magnify(reduce, contract, enlarge, shrink)
3
reinforce(strengthen, augment)
2
develop(ruin, destroy, raise, fail)
2
encourage(hurt, raise, rise, extend)
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APASmart Define. (2016). weaken thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/weaken/thesaurus/antonyms
ChicagoSmart Define. 2016. "weaken thesaurus" https://smartdefine.org/weaken/thesaurus/antonyms (accessed September 28, 2026).
HarvardSmart Define 2016, weaken thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/weaken/thesaurus/antonyms>.
MLASmart Define. "weaken thesaurus" 26 February 2016. Web. 28 September 2026. <https://smartdefine.org/weaken/thesaurus/antonyms>