dishonourable

If you knew an honourable man was to be offered a bribe to do a dishonourable act, you would feel sure he would refuse it.

It won't make me a bit more dishonourable to open the letter again—I've opened it once, and I don't feel any the worse for it.

Up to then a terrible obstacle—the life of the legitimate wife—had prolonged a dishonourable situation.

But a more dishonourable thing was never suffered by Englishmen, nor a more barbarous done by man, as this by them to us.