Synonyms|66Antonyms|0|Broader|0Narrower|0Related|3
1
relentless(adjective, persistent, obstinate, insistent, dogged)
1
resolved(adjective, persistent, obstinate, insistent, dogged)
1
rigid(adjective, persistent, obstinate, insistent, dogged)
1
rough(adjective, hard, tough, severe, harsh)
1
set(adjective, persistent, obstinate, insistent, dogged)
1
severe(adjective, persistent, obstinate, insistent, dogged)
1
single-minded(adjective, persistent, obstinate, insistent, dogged)
1
steadfast(adjective, persistent, obstinate, insistent, dogged)
1
stouthearted(adjective, persistent, obstinate, insistent, dogged)
1
tenacious(adjective, persistent, obstinate, insistent, dogged)
1
tough(adjective, hard, rough, harsh, obstinate)
1
unbending(adjective, hard, tough, severe, rough)
1
unconquerable(adjective, persistent, obstinate, insistent, dogged)
1
uncooperative(adjective, persistent, obstinate, insistent, dogged)
1
unflinching(adjective, persistent, obstinate, insistent, dogged)
1
ungovernable(adjective, persistent, obstinate, insistent, dogged)
1
unmanageable(adjective, persistent, obstinate, insistent, dogged)
1
unregenerate(adjective, persistent, obstinate, insistent, dogged)
1
unruly(adjective, persistent, obstinate, insistent, dogged)
1
wayward(adjective, persistent, obstinate, insistent, dogged)
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APASmart Define. (2011). hard-shelled thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/hard-shelled/thesaurus/synonyms
ChicagoSmart Define. 2011. "hard-shelled thesaurus" https://smartdefine.org/hard-shelled/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2011, hard-shelled thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/hard-shelled/thesaurus/synonyms>.
MLASmart Define. "hard-shelled thesaurus" 24 May 2011. Web. 26 September 2026. <https://smartdefine.org/hard-shelled/thesaurus/synonyms>