Synonyms|58Antonyms|26|Broader|0Narrower|0Related|196
19
ungrateful(adjective, rude, grateful, churlish, appreciative)
16
thankless(adjective, rude, inconsiderate, grateful, churlish)
13
unappreciative(adjective, rude, grateful, churlish, thankless)
7
heedless(adjective, thankless, ungrateful)
6
ingrate
6
thoughtless(adjective, thankless, ungrateful)
6
unmindful(adjective, thankless, ingratitude)
5
rude(adjective, thankless)
4
unappreciated(adjective, grateful, thankless)
3
horrible
3
offensive
2
unthanking(adjective, grateful, thankless)
2
bad
2
disagreeable
2
disgusting
2
inappreciative(adjective, thankless)
2
obnoxious
1
unpleasant
1
bitter
1
cantankerous
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APASmart Define. (2015). unthankful thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unthankful/thesaurus/synonyms
ChicagoSmart Define. 2015. "unthankful thesaurus" https://smartdefine.org/unthankful/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unthankful thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unthankful/thesaurus/synonyms>.
MLASmart Define. "unthankful thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unthankful/thesaurus/synonyms>