Synonyms|178Antonyms|0|Broader|2Narrower|0Related|5
4
stabilize(verb, calm, keep, steady, soothe)
4
tone
2
balance
2
counterbalance(calm, secure, steady, soothe, compensate)
2
thicken
1
ballast
1
buttress(calm, strengthen, steady, soothe, fortify)
1
counterpoise(calm, fix, secure, sustain, steady)
1
establish(strengthen, fortify)
1
firm
1
fix(calm, sustain, strengthen, steady, soothe)
1
freeze
1
harden(verb, strengthen)
1
hold
1
immobilise
1
immobilize
1
keep
1
nail down
1
pin down
1
retain
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APASmart Define. (2015). firm up thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/firm_up/thesaurus/synonyms
ChicagoSmart Define. 2015. "firm up thesaurus" https://smartdefine.org/firm_up/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, firm up thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/firm_up/thesaurus/synonyms>.
MLASmart Define. "firm up thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/firm_up/thesaurus/synonyms>