impermissible

On eight of the trips, all expenses to the hunting lodges were either improper use of campaign funds or impermissible gifts.

These terms are utterly impermissible, and are to be scouted.

It seemed impermissible to allow even a child to take its inventions quite so seriously.

One can understand how an act, good in itself, can become a sin because it is performed under impermissible circumstances.