2
grinding(adjective, tough, rough, difficult, harsh)
2
humanitarian(adjective, benevolent, munificent)
2
implacable(adjective, mean, strong, hard, tough)
2
insensitive
2
laborious(adjective, tough, rough, difficult, heavy)
2
open-hearted
2
openhearted(kind, generous, prodigal)
2
plenty(adjective, generous, lavish, abundant, ample)
2
profligate(adjective, grand, extravagant, generous, abundant)
2
rugged(adjective, strong, hard, tough, severe)
2
savage
2
spendthrift
2
steely(adjective, strong, hard, tough, severe)
2
stiff(adjective, severity)
2
stintless
2
strenuous(adjective, tough, rough, difficult, harsh)
2
taxing
2
thick-skinned(adjective, tough, harsh, grim, painful)
2
thriftless(adjective, grand, extravagant, generous, abundant)
2
unmeasured
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APASmart Define. (2016). unsparing thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unsparing/thesaurus/synonyms
ChicagoSmart Define. 2016. "unsparing thesaurus" https://smartdefine.org/unsparing/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, unsparing thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unsparing/thesaurus/synonyms>.
MLASmart Define. "unsparing thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/unsparing/thesaurus/synonyms>