impermissible
im·per·mis·sible
adjective
1.
2.
not allowable
Origin
From im- + permissible.
Related words
See also
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.