13 entries under unmentionable topic. ×

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anathema(adjective, offensive, taboo, permitted, prohibited)
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banned(adjective, offensive, permitted, prohibited, unthinkable)
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disapproved(adjective, offensive, permitted, prohibited, unthinkable)
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forbidden(adjective, offensive, permitted, prohibited, unthinkable)
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illegal(adjective, offensive, permitted, prohibited, unthinkable)
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outlawed(adjective, offensive, permitted, prohibited, unthinkable)
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permitted(adjective, offensive, prohibited, unthinkable)
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prohibited(adjective, offensive, permitted, unthinkable)
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proscribed(adjective, offensive, permitted, prohibited, unthinkable)
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reserved(adjective, offensive, permitted, prohibited, unthinkable)
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restricted(adjective, offensive, permitted, prohibited, unthinkable)
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unacceptable(adjective, offensive, permitted, prohibited, unthinkable)
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unthinkable(adjective, offensive, permitted, prohibited)
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APASmart Define. (2013). frowned on thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/frowned_on/thesaurus/synonyms
ChicagoSmart Define. 2013. "frowned on thesaurus" https://smartdefine.org/frowned_on/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2013, frowned on thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/frowned_on/thesaurus/synonyms>.
MLASmart Define. "frowned on thesaurus" 18 May 2013. Web. 30 September 2026. <https://smartdefine.org/frowned_on/thesaurus/synonyms>