18
ungrateful(adjective, characteristic, egotism, thanklessness, rudeness)
16
thankless(adjective, characteristic, egotism, thanklessness, mean)
14
unappreciative(adjective, characteristic, egotism, thanklessness, mean)
8
unthankful(adjective, characteristic, egotism, thanklessness)
4
disagreeable(adjective, characteristic, rudeness, displeasure, egotism)
4
rude(adjective, characteristic, rudeness, displeasure, egotism)
4
ungracious(adjective, characteristic, rudeness, displeasure, egotism)
4
unpleasant(adjective, characteristic, rudeness, displeasure, egotism)
4
unwelcome(adjective, characteristic, rudeness, displeasure, egotism)
3
heedless(adjective, characteristic, egotism, thanklessness)
2
abhorrent(adjective, characteristic, rudeness, displeasure)
2
abominable(adjective, characteristic, rudeness, displeasure)
2
aggravating(adjective, characteristic, rudeness, displeasure)
2
angering(adjective, characteristic, rudeness, displeasure)
2
annoying(adjective, characteristic, rudeness, displeasure)
2
bilious(adjective, characteristic, rudeness, displeasure)
2
commonplace(adjective, characteristic, rudeness, displeasure)
2
deplorable(adjective, characteristic, rudeness, displeasure)
2
depressing(adjective, characteristic, rudeness, displeasure)
2
detestable(adjective, characteristic, rudeness, displeasure)
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APASmart Define. (2015). grateful thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/grateful/thesaurus/antonyms
ChicagoSmart Define. 2015. "grateful thesaurus" https://smartdefine.org/grateful/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, grateful thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/grateful/thesaurus/antonyms>.
MLASmart Define. "grateful thesaurus" 21 September 2015. Web. 24 September 2026. <https://smartdefine.org/grateful/thesaurus/antonyms>