IMPERMISSIBLE Synonyms: 91 Similar and Opposite Words

impermissible

adjective

ˌim-pər-ˈmi-sə-bəl

as in prohibited

that may not be permitted trial juries must be able to discern the difference between a permissible inference and impermissible speculation

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

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.

Recent Examples of impermissible 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 The speedometer must have ticked up from zero to a speed impermissible in Lusaka morning traffic jams. —

Literary Hub, 27 Mar. 2026 Slavery had become ever more entrenched in America; this transformation had brought the fringe to the mainstream, made the unthinkable thinkable, the impermissible permissible. —

Jake Lundberg, The Atlantic, 12 Feb. 2026 In the last few months, the NCAA has ruled more than a dozen Division I men’s basketball players permanently ineligible for manipulating game results and their own performances, making impermissible bets, providing information to gamblers and not cooperating with investigations. —

Ralph D. Russo, New York Times, 15 Jan. 2026 See All Example Sentences for impermissible

Recent Examples of Synonyms for impermissible

Adjective

There is, however, room for questions about where the line between prohibited and acceptable political involvement will fall in practice.

— BrieAnna J. Frank, USA Today, 11 July 2025
The list of prohibited and restricted items, as found on the CBP website, includes alcohol, biological materials, firearms, food and produce such as fruits and vegetables, soil, wildlife, fish, and gold, among other items.

— Dan Perry, Newsweek, 28 Feb. 2025