149 entries under rough topic. ×

6
stern(adjective, mean, hard, tough, severe)
6
unbending(adjective, hard, tough, harsh)
5
blunt(verb, adjective, dull, develop)
5
hard-nosed(adjective, mean, hard, tough, evil)
5
unforgiving(adjective, person, mean, hard, severe)
5
unyielding(adjective, mean, hard, severe)
4
hostile(adjective, person, hard, tough, evil)
4
toughen(verb, close, set, fix, settle)
4
unfriendly(adjective, hard, evil, nasty)
4
vicious(adjective, mean, hard, evil)
3
brutalize(verb, dull, develop, adjust)
3
fierce(adjective, mean, hard, severe, evil)
3
hard-bitten(adjective, hard, harsh, cruel)
3
inure(verb, dull, develop, adjust)
3
steel(verb, dull, close, set, fix)
3
stubborn(adjective, mean, hard, tough, severe)
2
coarse(adjective, dull, low, rude)
2
coarsen(verb, dull, develop, adjust)
2
evil(adjective, hard, nasty, harsh)
2
ferocious(adjective, mean, hard, evil)
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APASmart Define. (2016). callous thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/callous/thesaurus/synonyms
ChicagoSmart Define. 2016. "callous thesaurus" https://smartdefine.org/callous/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, callous thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/callous/thesaurus/synonyms>.
MLASmart Define. "callous thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/callous/thesaurus/synonyms>