Synset
not permitted
<adj.all>
impermissible
sample sentences
"impermissible behavior"
lexical pointers
antonym
permissible
derivationally related form
impermissibility
semantic pointers
also see
intolerable, unbearable, unendurable
similar to
forbidden, taboo, out, prohibited, proscribed, tabu, verboten
unmentionable
untouchable