31 entries under regret topic. ×

22
sad(adjective, wrong, happy, dark, sorrow)
21
lamentable(adjective, wrong, happy, sad, sorrow)
18
unfortunate(adjective, bad, sad, dark, sorrow)
17
woeful(adjective, wrong, happy, sad, dark)
11
dolorous(adjective, happy, sad, dark, sorrow)
11
unhappy(adjective, wrong, sad, dark, sorrow)
9
disappointing(adjective, wrong, sad, dark, sorrow)
9
pathetic(adjective, sad, dark, sorrow, depression)
7
lugubrious(adjective, sad, dark, sorrow, depression)
6
joyless(adjective, sad, dark, sorrow, depression)
6
plaintive(adjective, sad, dark, sorrow, depression)
6
sorry(adjective, sad, dark, sorrow, depression)
5
comfortless(adjective, sad, dark, sorrow, depression)
4
devastating(adjective, sad, dark, sorrow, depression)
3
dejected(adjective, sad, dark, sorrow, depression)
3
desolate(adjective, sad, dark, sorrow, depression)
3
down hearted(adjective, sad, dark, sorrow, depression)
3
dumpish(adjective, sad, dark, sorrow, depression)
3
dusky(adjective, sad, dark, sorrow, depression)
3
heavy hearted(adjective, sad, dark, sorrow, depression)
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APASmart Define. (2015). regrettable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/regrettable/thesaurus/synonyms
ChicagoSmart Define. 2015. "regrettable thesaurus" https://smartdefine.org/regrettable/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, regrettable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/regrettable/thesaurus/synonyms>.
MLASmart Define. "regrettable thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/regrettable/thesaurus/synonyms>