Synonyms|251Antonyms|39|Broader|2Narrower|0Related|383

57 entries under rugged topic. ×

1
thick(adjective, strong, hard, tough, firm)
1
unsparing(adjective, strong, hard, tough, sturdy)
0
astringent(adjective, strong, hard, tough, sturdy)
0
bitter(adjective, strong, hard, tough, sturdy)
0
by the book(expression, adjective, idiom, strong, hard)
0
disciplinary(adjective, strong, hard, tough, sturdy)
0
ferric(adjective, strong, hard, tough, sturdy)
0
ferrous(adjective, strong, hard, tough, sturdy)
0
forbidding(adjective, strong, hard, tough, sturdy)
0
frowning(adjective, strong, hard, tough, sturdy)
0
hang-tough(adjective, strong, hard, tough, sturdy)
0
hard-shell(adjective, strong, hard, tough, sturdy)
0
mortified(adjective, strong, hard, tough, sturdy)
0
rough(adjective, strong, hard, tough, sturdy)
0
serious(adjective, strong, hard, tough, sturdy)
0
steel(adjective, strong, hard, tough, sturdy)
0
tough inflexible(expression, strong, hard, tough, sturdy)
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ChicagoSmart Define. 2015. "adamantine thesaurus" https://smartdefine.org/adamantine/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, adamantine thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/adamantine/thesaurus/synonyms>.
MLASmart Define. "adamantine thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/adamantine/thesaurus/synonyms>