adj. 25B6; adjective UNETHICAL, bad, morally wrong, wrongful, wicked, evil, unprincipled, unscrupulous, dishonourable, dishonest, unconscionable, iniquitous, disreputable, corrupt, depraved, vile, villainous, nefarious, base, miscreant; sinful, impure, unchaste, unvirtuous, shameless, degenerate, debauched, dissolute, reprobate, lewd, licentious, wanton, promiscuous; informal shady, low-down; Brit. informal dodgy, crooked.
ethical, chaste.