23
contrite(adjective, wrong, sad, sorry, regret)
22
repentant(adjective, sad, unhappy, sorry, regret)
21
remorseful(adjective, wrong, sad, sorry, regret)
20
sorry(adjective, wrong, sad, unhappy, hesitant)
20
penitent(adjective, sad, unhappy, sorrowful, sorry)
19
rueful(adjective, wrong, sad, sorry, responsible)
18
apologetic(adjective, sad, unhappy, sorry, regret)
13
sorrowful(adjective, sad, unhappy, upsetting, sorry)
12
nostalgic(adjective, melancholy, thoughtful, sentimental, pensive)
12
sad(adjective, unhappy, melancholy, sadness, thoughtful)
11
ashamed(adjective, sad, sorry, remorseful, regretting)
11
bad(adjective, sad, unhappy, sorry, apologetic)
11
conscience-stricken(adjective, sad, unhappy, apologetic, penitent)
8
mournful(adjective, sad, unhappy, terrible, melancholy)
7
guilty(adjective, blameworthy)
7
homesick(adjective, sentimental, regret, wistful)
7
penitential(adjective, sad, unhappy, regret, apologetic)
6
compunctious(adjective, sad, unhappy, sorry, regret)
6
disappointed(adjective, sad, sorry)
6
unhappy(adjective, sad, hesitant, distressed, mournful)
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APASmart Define. (2015). regretful thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/regretful/thesaurus/synonyms
ChicagoSmart Define. 2015. "regretful thesaurus" https://smartdefine.org/regretful/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, regretful thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/regretful/thesaurus/synonyms>.
MLASmart Define. "regretful thesaurus" 19 June 2015. Web. 21 September 2026. <https://smartdefine.org/regretful/thesaurus/synonyms>