impermissible

adjective

im·​per·​mis·​si·​ble ˌim-pər-ˈmi-sə-bəl How to pronounce impermissible (audio)
Synonyms of impermissiblenext
: not permissible
impermissibility
ˌim-pər-ˌmi-sə-ˈbi-lə-tē How to pronounce impermissible (audio)
noun
impermissibly
ˌim-pər-ˈmi-sə-blē How to pronounce impermissible (audio)
adverb

Synonyms of impermissible

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Examples of impermissible in a Sentence

Such behavior is impermissible under the new guidelines. an impermissible breach of etiquette
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The board would be able to suspend or prohibit any investment found to be impermissible. — Garrett Downs, CNBC, 11 June 2026 Those with a weak stomach should wait until the air is cleared as to what the legal field considers permissible versus impermissible. — Lance Eliot, Forbes.com, 17 Apr. 2026 It can legally be used in military contexts as a smokescreen or a source of illumination, but its use in populated areas is impermissible. — Jack Lohmann, Time, 30 Mar. 2026 Alexander didn’t live up to the lofty expectations set for him, dealing with injuries, inconsistent play and an impermissible benefits investigation regarding his mother. — Pj Green april 28, Kansas City Star, 28 Apr. 2026 See All Example Sentences for impermissible

Word History

First Known Use

1829, in the meaning defined above

Time Traveler
The first known use of impermissible was in 1829

Rhymes for impermissible

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Cite this Entry

“Impermissible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/impermissible. Accessed 7 Jul. 2026.

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Legal Definition

impermissible

adjective
im·​per·​mis·​si·​ble ˌim-pər-ˈmi-sə-bəl How to pronounce impermissible (audio)
: not permissible
impermissibly adverb
Last Updated: - Updated example sentences
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