64 entries under painful topic. ×

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unpalatable(adjective, unpleasant, vicious, distressing)
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unpleasant(adjective, vicious, distressing)
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vexatious(adjective, severe, harsh, unpleasant, heavy)
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woeful(adjective, unpleasant, vicious, distressing)
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APASmart Define. (2016). merciless thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/merciless/thesaurus/synonyms
ChicagoSmart Define. 2016. "merciless thesaurus" https://smartdefine.org/merciless/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, merciless thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/merciless/thesaurus/synonyms>.
MLASmart Define. "merciless thesaurus" 31 March 2016. Web. 1 October 2026. <https://smartdefine.org/merciless/thesaurus/synonyms>