113 entries under tough topic. ×

10
impassive(adjective, calm, hard, cool)
10
stony(adjective, person, mean, hard, cool)
9
hard-boiled(adjective, person, bad, hard)
9
hard-hearted(adjective, mean, bad, hard)
9
obdurate(adjective, person, mean, hard, cool)
9
uncompassionate(adjective, person, mean, hard, cool)
9
uncordial(adjective, person, hard, severe)
8
stern(adjective, person, mean, harsh)
8
stoic(adjective, cool, rational, straightforward)
7
cold-hearted(adjective, hard, severe, attitude)
7
impersonal(adjective, calm, cool, temper)
7
insensate(adjective, bad, hard, severe)
7
insensible(adjective, bad, hard, cool)
6
antagonistic(adjective, person, harsh, cruel)
6
grim(adjective, person, mean, harsh)
6
harsh(adjective, mean, hard, cool)
5
numb(adjective, hard, severe, cold)
5
severe(adjective, mean, hard, harsh)
5
thick-skinned(adjective, hard, cool, severe)
4
objective(adjective, calm, cool, rational)
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APASmart Define. (2016). cold-blooded thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/cold-blooded/thesaurus/synonyms
ChicagoSmart Define. 2016. "cold-blooded thesaurus" https://smartdefine.org/cold-blooded/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, cold-blooded thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/cold-blooded/thesaurus/synonyms>.
MLASmart Define. "cold-blooded thesaurus" 23 March 2016. Web. 27 September 2026. <https://smartdefine.org/cold-blooded/thesaurus/synonyms>