Synonyms|510Antonyms|157|Broader|15Narrower|0Related|338

83 entries under harden topic. ×

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stun(baffle, puzzle, toughen, roughen)
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tauten(verb, strengthen, reinforce, stabilize)
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tense(verb, strengthen, reinforce, stabilize)
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APASmart Define. (2015). thicken thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/thicken/thesaurus/synonyms
ChicagoSmart Define. 2015. "thicken thesaurus" https://smartdefine.org/thicken/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, thicken thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/thicken/thesaurus/synonyms>.
MLASmart Define. "thicken thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/thicken/thesaurus/synonyms>