impermissible

• They regard this as an unjustified and impermissible, nay, indecent attempt to mix in matters which do not concern the party in question. —  Adolf Hitler's Mein Kampf: Federalism as a Mask
• Thus, a fifteen year old's basic maturity renders the practice of in-store reading impermissible (I would like to note that leafing through a volume is not included under this, as buying a book blindly is a bit silly). —  Anime Nano!
• What is impermissible, however, is the use of public power either as a personal weapon or a personal reward system -- for example, using public funds to pay for one's prostitute, as Governor Eliot Spitzer is alleged to have done. —  The Nation: Top Stories
• Debating about religious matter is impermissible, in general … —  Pursuing Holiness
• On the other hand, Kubin / O'Farrel seems to suggest that in the context of a "general approach that seemed to be a promising field of experimentation, where the prior art gave only general guidance as to the particular form of the claimed invention or how to achieve it" then it's "impermissible" to suggest that it was even obvious to try making the composition! —  Patent Law Blog (Patently-O)

Roget's II: The New Thesaurus

Allen's Synonyms and Antonyms

Used in the Same Context