2
covetous(adjective, voracious)
2
unflinching(adjective, mean, severe, harsh, cruel)
2
austere
2
disconsolate
2
dismal
2
dour
2
esurient(adjective, rapacious, voracious)
2
forbidding
2
ghastly
2
gloomy
2
grasping(adjective, voracious)
2
grisly
2
gruesome
2
harsh(adjective, mean, severe, cruel, determined)
2
hoggish
2
immitigable
2
inappeasable
2
limitless(adjective, avid, greedy, voracious)
2
macabre
2
mordant
11 years ago|2.3k views|share |citing 
APASmart Define. (2015). unappeasable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/unappeasable/thesaurus/synonyms
ChicagoSmart Define. 2015. "unappeasable thesaurus" https://smartdefine.org/unappeasable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, unappeasable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unappeasable/thesaurus/synonyms>.
MLASmart Define. "unappeasable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/unappeasable/thesaurus/synonyms>