22
thankless(adjective, difficult, rude, inconsiderate, grateful)
17
unthankful(adjective, rude, grateful, churlish, appreciative)
16
unappreciative(adjective, rude, grateful, churlish, appreciative)
8
distasteful(adjective, unpleasant, terrible, dirty, badly)
8
ingrate(noun, adjective, appreciative, ingratitude)
6
heedless(adjective, appreciative)
5
unpleasant(adjective, difficult, trying, unappreciated, unrewarding)
5
selfish(adjective, appreciative)
5
thoughtless
4
disagreeable(adjective, difficult, unpleasant, trying, unappreciated)
4
self-centered(adjective, appreciative)
4
nasty(adjective, terrible, dirty, badly, scary)
4
ungracious(adjective, terrible, dirty, badly, scary)
4
unmindful(adjective, appreciative, ingratitude)
3
unappreciated(adjective, difficult, rude, unpleasant, trying)
2
displeasing(adjective, terrible, dirty, badly, scary)
2
unpalatable(adjective, terrible, dirty, badly, scary)
2
bum(adjective, terrible, dirty, badly, scary)
2
careless(adjective, appreciative)
2
cringe-worthy(adjective, terrible, dirty, badly, scary)
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APASmart Define. (2015). ungrateful thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/ungrateful/thesaurus/synonyms
ChicagoSmart Define. 2015. "ungrateful thesaurus" https://smartdefine.org/ungrateful/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, ungrateful thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/ungrateful/thesaurus/synonyms>.
MLASmart Define. "ungrateful thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/ungrateful/thesaurus/synonyms>