93 entries under thicken topic. ×

4
gel(verb, form, set, develop, combine)
3
cement(verb, close, set, develop, secure)
3
develop(verb, form, study, secure, join)
3
embitter(verb, stabilize, toughen, season)
3
inspissate(verb, set, swell, strengthen, dry)
3
numb(verb, stabilize, toughen, season)
2
blunt(verb, stabilize, toughen, season)
2
callus(noun, verb, calcify, stabilize)
2
concentrate(verb, develop, secure, join, unite)
2
condense(verb, form, set, develop, secure)
2
dull(verb, stabilize, toughen, season)
2
gelatinize(verb, form, set, fix, develop)
2
jelly(verb, form, set, develop, combine)
2
paralyze(verb, stabilize, toughen, season)
2
precipitate(verb, close, set, settle, firm)
2
stabilize(verb, place, set, develop, secure)
2
stun(verb, stabilize, toughen, season)
2
stupefy(verb, stabilize, toughen, season)
2
teach(verb, study, develop, improve, prepare)
1
build up(verb, expression, support, increase, develop)
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APASmart Define. (2016). harden thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/harden/thesaurus/synonyms
ChicagoSmart Define. 2016. "harden thesaurus" https://smartdefine.org/harden/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, harden thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/harden/thesaurus/synonyms>.
MLASmart Define. "harden thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/harden/thesaurus/synonyms>