3
unlucky
2
atoning(adjective, sorry, penitent, repentant)
2
blighted
2
contemplative(adjective, melancholy, thoughtful, pensive)
2
crestfallen
2
dejected(adjective, sad, discontent, mournful, grief-stricken)
2
dingy
2
disconsolate(adjective, sad, unhappy, melancholy, thoughtful)
2
disheartened(adjective, sadness, morose, aloofness)
2
doleful(sad, upsetting, mournful, deplorable, grief-stricken)
2
drab
2
gloomy
2
grief-stricken(adjective, sad, mournful)
2
guilt-ridden(adjective, sad, unhappy, apologetic)
2
meritless
2
miserable(adjective, sad, mournful, grief-stricken)
2
pensive(adjective, melancholy, thoughtful)
2
reflective(adjective, melancholy, thoughtful, pensive)
2
ruthful(adjective, sad, mournful, grief-stricken)
2
self-accusing(sad, unhappy, apologetic)
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APASmart Define. (2015). regretful thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/regretful/thesaurus/synonyms
ChicagoSmart Define. 2015. "regretful thesaurus" https://smartdefine.org/regretful/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, regretful thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/regretful/thesaurus/synonyms>.
MLASmart Define. "regretful thesaurus" 19 June 2015. Web. 26 September 2026. <https://smartdefine.org/regretful/thesaurus/synonyms>