62 entries under rigid topic. ×

72
stubborn(adjective, resolute, determined, uncompromising, obstinate)
55
inflexible(adjective, person, mean, strong, hard)
46
unyielding(adjective, mean, strong, hard, secure)
40
uncompromising(adjective, mean, hard, secure, rough)
35
firm(noun, adjective, mean, strong, hard)
34
determined(adjective, strong, hard, tough, flat)
32
obstinate(adjective, mean, strong, hard, tough)
32
adamantine(adjective, strong, hard, tough, firm)
32
resolute(adjective, strong, hard, secure, tough)
32
unbending(adjective, mean, strong, hard, tough)
32
unrelenting(adjective, mean, strong, hard, tough)
30
immovable(adjective, mean, strong, hard, secure)
24
tough(adjective, mean, strong, hard, rough)
21
stiff(adjective, hard, rough, firm, harsh)
21
hard(adjective, mean, strong, tough, rough)
20
fixed(adjective, mean, strong, hard, secure)
18
steadfast(adjective, strong, secure, tough, flat)
14
stern(adjective, mean, hard, rough, firm)
12
unwavering(adjective, strong, secure, flat, firm)
11
flinty(adjective, strong, hard, tough, firm)
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APASmart Define. (2016). adamant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/adamant/thesaurus/synonyms
ChicagoSmart Define. 2016. "adamant thesaurus" https://smartdefine.org/adamant/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, adamant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/adamant/thesaurus/synonyms>.
MLASmart Define. "adamant thesaurus" 23 March 2016. Web. 26 September 2026. <https://smartdefine.org/adamant/thesaurus/synonyms>