Synonyms|57Antonyms|4|Broader|0Narrower|0Related|19
7
hardening(noun, verb, strengthening)
6
tempering(verb, strengthening)
4
fortifying(verb, strengthening)
4
reinforcing(verb, strengthening)
4
strengthening(verb, strengthening)
3
bracing(verb, strengthening)
2
annealing
2
indurating
2
inuring
2
solidifying
2
stiffening
2
supporting(verb, strengthening)
1
acclimating
1
acclimatizing
1
arteriosclerosis
1
atherosclerosis
1
buttressing(verb, strengthening)
1
coarsening
1
concreting
1
empowering(verb, strengthening)
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APASmart Define. (2015). toughening thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/toughening/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughening thesaurus" https://smartdefine.org/toughening/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, toughening thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/toughening/thesaurus/synonyms>.
MLASmart Define. "toughening thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/toughening/thesaurus/synonyms>