impermissible

[ im-per-mis-uh-buh l ]
/ ˌɪm pərˈmɪs ə bəl /

adjective

not permissible or allowable; unallowable.

Origin of impermissible

First recorded in 1855–60; im-2 + permissible

Related forms

im·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 Forms

impermissibility, 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