280 entries under tough topic. ×

3
threatening(severe, difficult, offensive, weighty)
3
uncontrite(adjective, harsh, cruel, grim)
3
worrying(adjective, severe, important, significant)
2
anesthetized(adjective, severe, cruel, unfeeling)
2
awkward(adjective, rough, difficult, delicate)
2
bearish(adjective, harsh, rude, cruel)
2
boisterous(adjective, severe, rough, difficult)
2
drastic(adjective, severe, rough, harsh)
2
frowning(adjective, strong, severe, harsh)
2
horrible(adjective, difficult, terrible, forbidding)
2
impermeable(adjective, set, firm, solid)
2
levelheaded(sound, reasonable, sensible, practical)
2
nonporous(solid, rigid, inflexible)
2
overwhelming(great, difficult, intense, daunting)
2
rational(adjective, sound, reasonable, sensible)
2
senseless(adjective, severe, cruel, unsympathetic)
2
sensible(adjective, sound, reasonable, sharp)
2
shameless(adjective, evil, rough, nasty)
2
surly(adjective, mean, severe, harsh)
2
testing(adjective, severe, difficult, violent)
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APASmart Define. (2016). hard thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/hard/thesaurus/synonyms
ChicagoSmart Define. 2016. "hard thesaurus" https://smartdefine.org/hard/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, hard thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/hard/thesaurus/synonyms>.
MLASmart Define. "hard thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/hard/thesaurus/synonyms>