A reckless and unprincipled reprobate.

synonym: black sheep.

Roget 863: rashness etc. adj.; temerity, want of caution, imprudence, indiscretion; overconfidence, presumption, audacity.    precipitancy, precipitation; impetuosity; levity; foolhardihood^†, foolhardiness; heedlessness, thoughtlessness etc. (inattention) 458; carelessness etc. (neglect) 460; desperation; Quixotism, knight-errantry; fire eating.    gaming, gambling; blind bargain, leap in the dark, leap of faith, fool's paradise; too many eggs in one basket.    desperado, rashling^†, madcap, daredevil, Hotspur, fire eater, bully, bravo, Hector, scapegrace, enfant perdu [Fr.]; Don Quixote, knight-errant, Icarus; adventurer; gambler, gamester; dynamitard^†; boomer [U.S.].    ... show more

Roget 949: bad man, wrongdoer, worker of iniquity; evildoer etc. 913; sinner; the wicked etc. 945; bad example.    villain, rascal, scoundrel, miscreant, budmash^†, caitiff^†; wretch, reptile, viper, serpent, cockatrice, basilisk, urchin; tiger^†, monster; devil etc. (demon) 980; devil incarnate; demon in human shape, Nana Sahib; hellhound, hellcat; rakehell^†.    bad woman, jade, Jezebel.    scamp, scapegrace, rip, runagate, ne'er-do-well, reprobate, scalawag, scallawag.    rou_e [Fr.], rake; Sadist; skeesicks [Slang], skeezix [U.S.]; limb; one who has sold himself to the devil, fallen angel, ame damnee [Fr.], vaurien^†, mauvais sujet [Fr.], loose fish, sad dog; rounder [Slang]; lost sheep, black sheep; castaway, recreant, defaulter; prodigal etc. 818.    rough, rowdy, hooligan, tough, ugly customer, mean mother [Coll.], ruffian, bully, meanie [Joc.]; Jonathan Wild; hangman.    incendiary, arsonist, fire bug [U.S.].    thief etc. 792; murderer, terrorist etc. 361.    [person who violates the criminal law] culprit, delinquent, crook, hoodlum, hood, criminal, thug, malefactor, offender, perpetrator, perp [Coll.]; disorderly person, misdemeanant [Law]; outlaw; scofflaw; vandal; felon, (convicted criminal); criminal; convict, prisoner, inmate, jail bird, ticket of leave man; multiple offender.    blackguard, polisson^†, loafer, sneak; rapscallion, rascallion^†; cullion^†, mean wretch, varlet, kern^†, ame-de-boue [Fr.], drole^†; cur, dog, hound^†, whelp^†, mongrel^†; lown^†, loon, runnion^†, outcast, vagabond; rogue etc. (knave) 941; ronian^†; scum of the earth, riffraff; Arcades ambo^†.    ... show more

Dutch: element, sujet
Polish: czarna owca, parszywa owca