impermissible

From im- + permissible.

• IPA^(key): /ˌɪmpɝˈmɪsɪbl/

• Audio (Southern England):

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impermissible (comparative more impermissible, superlative most impermissible)

1. Not permissible; not to be permitted or allowed.
   • 2025 May 29, Kalyeena Makortoff, “US federal court blocks Trump from imposing sweeping tariffs”, in The Guardian‎^[1], →ISSN:

     Their use was “impermissible not because it is unwise or ineffective, but because [federal law]^[sic] does not allow it”, the decision explained.

• William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “impermissible”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.
• “impermissible”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.