Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

viciousness &c adj.; iniquity, peccability†, demerit; sin, Adam†; old Adam†, offending Adam†. immorality, impropriety, indecorum, scandal, laxity, looseness of morals; enphagy†, dophagy†, exophagy†; want of principle, want of ballast; obliquity, backsliding, infamy, demoralization, pravity†, depravity, pollution; hardness of heart; brutality &c (malevolence) 907; corruption &c (debasement) 659; knavery &c (improbity) 940 [Obs.]; profligacy; flagrancy, atrocity; cannibalism; lesbianism, Sadism. infirmity; weakness &c adj.; weakness of the flesh, frailty, imperfection; error; weak side; foible; failing, failure; crying sin, besetting sin; defect, deficiency; cloven foot. lowest dregs of vice, sink of iniquity, Alsatian den†; gusto picaresco [It]. fault, crime; criminality &c (guilt) 947. sinner &c 949. [Resorts] brothel &c 961; gambling house &c 621; joint [Slang], opium den, shooting gallery, crack house. V. be vicious &c adj.; sin, commit sin, do amiss, err, transgress; misdemean oneself†, forget oneself, misconduct oneself; misdo†, misbehave; fall, lapse, slip, trip, offend, trespass; deviate from the line of duty, deviate from the path of virtue &c 944; take a wrong course, go astray; hug a sin, hug a fault; sow one's wild oats. render vicious &c adj.; demoralize, brutalize; corrupt &c (degrade) 659. Adj. vicious; sinful; sinning &c v.; wicked, iniquitous, immoral, unrighteous, wrong, criminal; naughty, incorrect; unduteous†, undutiful. unprincipled, lawless, disorderly, contra bonos mores [Lat.], indecorous, unseemly, improper; dissolute, profligate, scampish; unworthy; worthless; desertless†; disgraceful, recreant; reprehensible, blameworthy, uncommendable; discreditable, disreputable; Sadistic. base, sinister, scurvy, foul, gross, vile, black, grave, facinorous†, felonious, nefarious, shameful, scandalous, infamous, villainous, of a deep dye, heinous; flagrant, flagitious; atrocious, incarnate, accursed. Mephistophelian, satanic, diabolic, hellish, infernal, stygian, fiendlike†, hell-born, demoniacal, devilish, fiendish. miscreated†, misbegotten; demoralized, corrupt, depraved. evil-minded, evil-disposed; ill-conditioned; malevolent &c 907; heartless, graceless, shameless, virtueless; abandoned, lost to virtue; unconscionable; sunk in iniquity, lost in iniquity, steeped in iniquity. incorrigible, irreclaimable, obdurate, reprobate, past praying for; culpable, reprehensible &c (guilty) 947. unjustifiable; indefensible, inexcusable; inexpiable, unpardonable, irremissible†. weak, frail, lax, infirm, imperfect; indiscrete; demoralizing, degrading. Adv. wrong; sinfully &c adj.; without excuse. Int. O tempora!†, O mores!, Phr. alitur vitium vivitque tegendo [Vergil]; genus est mortis male vivere [Lat.] [Ovid]; mala mens malus animus [Lat.] [Terence]; nemo repente fuit turpissimus [Lat.]; the trail of the serpent is over them all [Moore]; to sanction vice and hunt decorum down [Bryon].