scoundrel(n = noun.person) villain - a wicked or evil person; someone who does evil deliberately;
is a kind of persona non grata, unwelcome person
has particulars: blackguard, bounder, cad, dog, heel, hound, gallows bird, knave, rapscallion, rascal, rogue, scalawag, scallywag, varlet, villainess
Derived form adjective scoundrelly₁

   A mean, worthless fellow; a rascal; a villain; a man without honor or virtue. [1913 Webster]
"Go, if your ancient, but ignoble blood
Has crept through scoundrels ever since the flood." [1913 Webster]

   Low; base; mean; unprincipled. [1913 Webster]

scoundrel, n. an unscrupulous villain; a rogue.

Derivative:
scoundreldom n. scoundrelism n. scoundrelly adj.

Etymology:
16th c.: orig. unkn.

N  bad man, wrongdoer, worker of iniquity, evildoer, sinner, the wicked, bad example, villain, rascal, scoundrel, miscreant, budmash, caitiff, wretch, reptile, viper, serpent, cockatrice, basilisk, urchin, tiger, monster, devil, 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, rake, Sadist, skeesicks, skeezix, limb, one who has sold himself to the devil, fallen angel, ame damnee, vaurien, mauvais sujet, loose fish, sad dog, rounder, lost sheep, black sheep, castaway, recreant, defaulter, prodigal, rough, rowdy, hooligan, tough, ugly customer, mean mother, ruffian, bully, meanie, Jonathan Wild, hangman, incendiary, arsonist, fire bug, thief, murderer, terrorist, culprit, delinquent, crook, hoodlum, hood, criminal, thug, malefactor, offender, perpetrator, perp, disorderly person, misdemeanant, 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, drole, cur, dog, hound, whelp, mongrel, lown, loon, runnion, outcast, vagabond, rogue, ronian, scum of the earth, riffraff, Arcades ambo, Int, sirrah!, Acherontis pabulum, gibier de potence.