14 entries under strengthening topic. ×

7
toughening(noun, verb)
6
tempering
5
strengthening
3
bracing
3
fortifying
2
invigorating(verb, adjective)
2
reinforcing
1
buttressing
1
empowering
1
energizing
1
enlivening
1
propping
1
supporting
1
vivifying
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APASmart Define. (2015). hardening thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/hardening/thesaurus/synonyms
ChicagoSmart Define. 2015. "hardening thesaurus" https://smartdefine.org/hardening/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, hardening thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/hardening/thesaurus/synonyms>.
MLASmart Define. "hardening thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/hardening/thesaurus/synonyms>