[im-per-mis-uh-buh l]


not permissible or allowable; unallowable.

Origin of impermissible

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

Related Words for impermissible

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

Examples from the Web for impermissible

Contemporary Examples of impermissible

British Dictionary definitions for impermissible



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

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

Online Etymology Dictionary, © 2010 Douglas Harper