Synonyms|2.3kAntonyms|347|Broader|18Narrower|4Related|2.9k

968 entries under adjective topic. ×

39
inexorable(tough, severe, firm, harsh)
39
uncompromising(hard, tough, severe, rough)
39
conservative(strain, firmness, labour, hardiness)
39
resolute(strong, hard, tough, severe)
39
robust(strong, great, strain, solid)
39
unbending(hard, correct, severe, rough)
38
constant(strain, firmness, purpose, reliable)
38
resilient(strong, strain, firmness, tight)
37
enduring(strain, firmness, labour, hardiness)
37
invariable(strain, firmness, labour, hardiness)
37
lasting(strain, firmness, labour, hardiness)
37
proof(strain, firmness, labour, hardness)
37
quiescent(strain, firmness, labour, hardiness)
37
rock-solid(strain, firmness, labour, hardiness)
37
settled(strain, firmness, labour, hardiness)
37
tenable(strain, firmness, labour, hardiness)
36
determined(strong, harsh, solid, cruel)
36
impregnable(strain, firmness, labour, hardiness)
36
intransigent(severe, determined, resolute, obstinate)
36
lingering(strain, firmness, labour, hardiness)
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ChicagoSmart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, stiff thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>.
MLASmart Define. "stiff thesaurus" 24 December 2015. Web. 24 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms>