891 entries under adjective topic. ×

12
explicit(clear, complete, total, plain)
12
hard-nosed(mean, clear, strong, hard)
12
impenetrable(close, set, hard, solid)
12
inelastic(hard, tough, solid, determined)
12
peremptory(resolution, authoritative, overbearing)
12
severe(clear, strong, hard, tough)
12
stalwart(calm, strong, sound, tough)
12
steely(strong, hard, tough, solid)
12
stern(hard, tough, severe, rough)
12
taut(strong, hard, secure, rough)
12
tense(verb, hard, strengthen, stiff)
12
thick(close, strong, hard, tough)
11
abiding(calm, strong, complete, secure)
11
confirmed(characteristic, hard, rough, harsh)
11
decisive(good, set, clear, strong)
10
changeless(solid, certain, stable, limited)
10
close(set, fix, hard, settle)
10
exact(close, correct, severe, plain)
10
immobile(calm, quiet, strong, secure)
10
immutable(calm, strong, hard, secure)
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APASmart Define. (2016). firm thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/firm/thesaurus/synonyms
ChicagoSmart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, firm thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>.
MLASmart Define. "firm thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms>