- Definitions|1
- Thesaurus|1.4k
- Abbreviations|0
| heartrending | |
| hopeless(adjective, bad, poor, awkward, inappropriate) | |
| horrible | |
| horrid | |
| inauspicious(negative, disapproving, uncomplimentary) | |
| infelicitous(adjective, bad, poor, negative, awkward) | |
| lousy(adjective, offensive, unpleasant, cheap, worthless) | |
| nostalgic | |
| objectionable(adjective, offensive, unpleasant, negative, obnoxious) | |
| painful(miserable, wretched, distressing, upsetting, anguished) | |
| regretful | |
| reprehensible | |
| ruthful(adjective, sad, sorrow, depression, woe) | |
| shaming | |
| shocking | |
| tearful(adjective, sad, sorrow, depression, woe) | |
| touching | |
| woebegone(miserable, wretched, anguished) | |
| abominable | |
| adverse(bad, poor, negative, awkward, inappropriate) |
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| APA | Smart Define. (2015). regrettable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/regrettable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "regrettable thesaurus" https://smartdefine.org/regrettable/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, regrettable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/regrettable/thesaurus/synonyms>. |
| MLA | Smart Define. "regrettable thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/regrettable/thesaurus/synonyms> |