3
plenteous(adjective, generous, lavish, abundant, ample)
3
plush(adjective, grand, extravagant, generous, abundant)
3
remorseless(adjective, severe, harsh, cruel, persistent)
3
tyrannical(adjective, severity)
3
unbending(adjective, close, strong, hard, tough)
3
uncharitable(adjective, person, aroused bad feelings)
3
unkind(adjective, tough, severe, harsh, cruel)
3
unyielding(adjective, mean, strong, hard, tough)
2
adamant(adjective, strong, hard, tough, sturdy)
2
altruistic(adjective, good, kind, reasonable, fair)
2
astringent(adjective, close, strong, hard, tough)
2
barbaric(adjective, person, aroused bad feelings)
2
barbarous(adjective, mean, severe, harsh, cruel)
2
big(adjective, good, kind, reasonable, fair)
2
burdensome(adjective, tough, rough, difficult, harsh)
2
flinty(adjective, close, strong, hard, tough)
2
flush
2
full(substantial, generous, sufficiency)
2
gracious(substantial, generous, benevolent, munificent, humanitarian)
2
greathearted(adjective, good, kind, reasonable, fair)
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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>