75 entries under harsh topic. ×

3
stern(adjective, hard, severe, rough)
3
strict(adjective, hard, tough, severe, rough)
2
grueling(adjective, hard, tough, severe)
2
unsparing(adjective, tough, rough, heavy)
1
brusque(adjective, tough, rude, unpleasant)
1
captious(adjective, tough, crabby, cranky)
1
churlish(adjective, hard, tough, rough, nasty)
1
crotchety(adjective, tough, awkward, irritable)
1
crusty(tough, awkward, irritable, grumpy)
1
dour(tough, awkward, grumpy, bad-tempered)
1
fretful(tough, awkward, critical, grumpy)
1
galling(adjective, hard, tough, severe)
1
gloomy(adjective, hard, tough, severe)
1
grouchy(adjective, tough, rude, unpleasant)
1
ill-humored(tough, awkward, irritable, touchy)
1
ill-tempered(adjective, hard, tough, evil, rough)
1
inflexible(adjective, hard, severe, rough)
1
merciless(adjective, tough, severe, rough)
1
morose(tough, awkward, grumpy, bad-tempered)
1
petulant(adjective, tough, rude, unpleasant)
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APASmart Define. (2016). difficult thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms
ChicagoSmart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, difficult thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>.
MLASmart Define. "difficult thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms>