Synonyms|804Antonyms|109|Broader|18Narrower|40Related|457
6
soften
5
melt(verb, upset, open, thin)
4
liquefy(verb, upset, open, thin)
4
weaken
3
dissolve(verb, upset, open, thin)
2
enervate
2
enfeeble
2
indulge(verb, upset, open, thin)
2
spoil(verb, upset, open, thin)
2
thaw
1
be intolerant(verb, upset, open, thin, calcify)
1
debilitate
1
deliquesce
1
fuse
1
hurt(verb, upset, open, thin)
1
lessen
1
loosen(verb, upset, open, thin)
1
sensitize
1
undermine
0
age
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APASmart Define. (2016). harden thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/harden/thesaurus/antonyms
ChicagoSmart Define. 2016. "harden thesaurus" https://smartdefine.org/harden/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2016, harden thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/harden/thesaurus/antonyms>.
MLASmart Define. "harden thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/harden/thesaurus/antonyms>