115 entries under mean topic. ×

19
remorseless(adjective, animal, tough, severe)
16
cruel(adjective, appearance, strong, hard)
16
hard-nosed(adjective, strong, hard, tough)
16
unforgiving(adjective, hard, tough, severe)
15
severe(adjective, appearance, strong, hard)
15
unappeasable(adjective, severe, harsh, cruel)
14
dogged(adjective, appearance, hard, tough)
14
ruthless(adjective, animal, appearance, hard)
13
iron(noun, adjective, hard, tough)
13
merciless(adjective, appearance, hard, tough)
12
stiff-necked(adjective, strong, hard, tough)
11
pitiless(adjective, animal, hard, tough)
11
tough(adjective, strong, hard, severe)
10
set in stone(expression, adjective, idiom, hard)
10
unmerciful(adjective, hard, tough, severe)
9
mulish(adjective, strong, hard, tough)
8
savage(adjective, animal, hard, tough)
7
hanging tough(expression, adjective, hard, determined)
7
inhuman(adjective, animal, hard, tough)
7
pigheaded(adjective, hard, tough, firm)
11 years ago|16k views|share |citing 
APASmart Define. (2015). unrelenting thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unrelenting/thesaurus/synonyms
ChicagoSmart Define. 2015. "unrelenting thesaurus" https://smartdefine.org/unrelenting/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unrelenting thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unrelenting/thesaurus/synonyms>.
MLASmart Define. "unrelenting thesaurus" 3 August 2015. Web. 28 September 2026. <https://smartdefine.org/unrelenting/thesaurus/synonyms>