84 entries under sturdy topic. ×

1
relentless(adjective, strong, hard, tough, severe)
1
unrelenting(adjective, strong, hard, tough, severe)
0
bullheaded(adjective, strong, hard, tough)
0
by the book(expression, adjective, idiom, strong, hard)
0
disciplinary(adjective, strong, hard, tough)
0
dyed-in-the-wool(adjective, strong, hard, tough)
0
ferric(adjective, strong, hard, tough)
0
ferrous(adjective, strong, hard, tough)
0
hang-tough(adjective, strong, hard, tough)
0
hard-boiled(adjective, strong, hard, tough, severe)
0
hard-core(adjective, strong, hard, tough)
0
hard-line(adjective, strong, hard, tough)
0
hard-shell(adjective, strong, hard, tough, severe)
0
hardheaded(adjective, strong, hard, tough)
0
immovable(adjective, strong, hard, tough)
0
implacable(adjective, strong, hard, tough, harsh)
0
inexorable(adjective, strong, hard, tough, harsh)
0
mortified(adjective, strong, hard, tough)
0
mulish(adjective, strong, hard, tough)
0
steel(adjective, strong, hard, tough)
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APASmart Define. (2015). rugged thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/rugged/thesaurus/synonyms
ChicagoSmart Define. 2015. "rugged thesaurus" https://smartdefine.org/rugged/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, rugged thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/rugged/thesaurus/synonyms>.
MLASmart Define. "rugged thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/rugged/thesaurus/synonyms>