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Impermissible has 8 synonyms. The top synonyms for impermissible are forbidden, unmentionable, prohibited, tabu, proscribed, untouchable, taboo, inadmissible. Another word for impermissible is forbidden. Browse the full list below.
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| Random | DefinitionA common synonym for impermissible is forbidden. Other synonyms include unmentionable, prohibited, tabu, proscribed.
Impermissible has 8 synonyms listed on Thesaurasize.
(adj): not permissible; not to be permitted or allowed
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