отъявленный

1) General subject: a wretch of, arch, arrant, confounded (he is a confounded bore - он адски скучен), cracking, deep dyed, deep-dyed, desperate, double-dyed, downright, dyed in the wool, egregious error, egregious fool, egregious lie, engrained, flaming, in grain, notorious, of the blackest (deepest) dye, out and out, out-and-out, outright, rank, right down, sad, thorough paced, thorough-paced, utter, frightful (frightful liar - отъявленный лгун (The Chronicles of Narnia)), thorough (used to emphasize the bad qualities of someone or something - a thorough pest, nuisance, mess etc.)

2) Colloquial: of the first water, right-down, the worst kind of, unqualified, certified (he's a certified asshole - он отъявленный урод)

3) Bookish: egregious

4) Politics: absolute, blatant, dyed-in-the-wool, hardcore, hardened, hopeless, inveterate, paid-up, total, unrelieved

5) Emotional: blooming

6) Makarov: of the blackest dye, of the deepest dye

7) Emotional: unconscionable