Dictionary.com
definitions

impermissible

[ im-per-mis-uh-buh l ]
/ ˌɪm pərˈmɪs ə bəl /
|
SEE MORE SYNONYMS FOR impermissible ON THESAURUS.COM

adjective

not permissible or allowable; unallowable.

RELATED WORDS

banned, closed, contraband, taboo, verboten, vetoed, no-no

Nearby words

  1. imperishable,
  2. imperium,
  3. impermanence,
  4. impermanent,
  5. impermeable,
  6. impers.,
  7. imperscriptable,
  8. imperscriptible,
  9. impersonal,
  10. impersonalism

Origin of impermissible

First recorded in 1855–60; im-2 + permissible
Related formsim·per·mis·si·bil·i·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for impermissible

British Dictionary definitions for impermissible

impermissible

/ (ˌɪmpəˈmɪsɪbəl) /

adjective

not permissible; not allowed
Derived Formsimpermissibility, nounimpermissibly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for impermissible

impermissible

adj.

1814, from assimilated form of in- "not, opposite of" (see in- (1)) + permissible.

Online Etymology Dictionary, © 2010 Douglas Harper