134 entries under firm topic. ×

1
creaky(adjective, hard, dead, rigid)
1
crowded(adjective, close, set, solid)
1
elevated(adjective, noble, straight, grand)
1
erectile(adjective, straight, upright)
1
hard-boiled(adjective, hard, severe, rough)
1
hard and fast(expression, adjective, idiom, solid)
1
hard as nails(expression, adjective, idiom, set, strong)
1
immalleable(adjective, hard, dead, rigid)
1
incompressible
1
located(adjective, secure, solid, steady)
1
numbed(adjective, hard, dead, rigid)
1
rheumatic(adjective, hard, dead, rigid)
1
situated(adjective, secure, solid, steady)
1
stiff as a board(expression, adjective, idiom, hard)
1
uncompliant(adjective, set, hard, rigid)
1
unsupple(adjective, hard, dead, rigid)
0
arrect(adjective, straight, upright)
0
clear(adjective, pleasant, sharp, bright, clean)
0
cocked(adjective, straight, upright)
0
compacted(adjective, set, strong, hard)
10 years ago|48k views|share |citing 
APASmart Define. (2015). stiff thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/stiff/thesaurus/synonyms
ChicagoSmart Define. 2015. "stiff thesaurus" https://smartdefine.org/stiff/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, stiff thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/stiff/thesaurus/synonyms>.
MLASmart Define. "stiff thesaurus" 24 December 2015. Web. 26 September 2026. <https://smartdefine.org/stiff/thesaurus/synonyms>