The Oxford Thesaurus An A-Z Dictionary of Synonyms - immoral adj.

1) corrupt, bad, wicked, evil, iniquitous, sinful, impure, unethical, unprincipled, abandoned, base, wrong, vile, depraved, dissolute, degenerate, reprobate, unregenerate, nefarious, flagitious, villainous, treacherous, unscrupulous, dishonest: Is it immoral to avoid paying one's taxes? 2 immodest, debauched, indecent, wanton, libertine, lecherous, lustful, libidinous, carnal, concupiscent, salacious, licentious, lascivious, lewd, obscene, pornographic, dirty, smutty, filthy: He was convicted for living off immoral earnings.