77 entries under tough topic. ×

3
tyrannical(adjective, hard, harsh, cruel)
3
unyielding(adjective, hard, harsh, cold)
2
churlish(adjective, hard, severe, cold)
2
fierce(adjective, hard, harsh, cruel)
2
implacable(adjective, hard, harsh, cruel)
2
unforgiving(adjective, hard, harsh, cruel)
2
unrelenting(adjective, hard, harsh, cruel)
2
vindictive(adjective, hard, harsh, behavior)
1
avaricious(adjective, hard, harsh, cruel)
1
bloody(adjective, hard, harsh, cruel)
1
cantankerous(adjective, hard, severe, cold)
1
cold fish(expression, adjective, hard, severe)
1
crotchety(adjective, hard, severe, cold)
1
exacting(adjective, hard, severe, cold)
1
feelingless(adjective, hard, severe, cold)
1
forbidding(adjective, person, hard, harsh)
1
grim(adjective, hard, harsh, cruel)
1
hard-bitten(adjective, hard, harsh, careless)
1
hard as nails(expression, adjective, idiom, hard)
1
inanimate(adjective, hard, severe, cold)
10 years ago|20k views|share |citing 
APASmart Define. (2016). insensitive thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/insensitive/thesaurus/synonyms
ChicagoSmart Define. 2016. "insensitive thesaurus" https://smartdefine.org/insensitive/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, insensitive thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/insensitive/thesaurus/synonyms>.
MLASmart Define. "insensitive thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/insensitive/thesaurus/synonyms>