[1] : The Collaborative International Dictionary of English v.0.48

egregious \egre"gious\ ?; 277, a. l. egregius; lit.,
   separated or chosen from the herd, i. e., distinguished,
   excellent; e out + grex, gregis, herd. see gregarious.
   surpassing; extraordinary; distinguished in a bad sense; --
   formerly used with words importing a good quality, but now
   joined with words having a bad sense; as, an egregious
   rascal; an egregious ass; an egregious mistake.
   1913 webster

         the egregious impudence of this fellow.  --bp. hall.
   1913 webster

         his wyclif's egregious labors are not to be
         neglected.                               --milton.
   1913 webster
see also:
gregarious 

[2] : WordNet (r) 2.0

egregious
     adj : conspicuously and outrageously bad or reprehensible; "a
           crying shame"; "an egregious lie"; "flagrant violation
           of human rights"; "a glaring error"; "gross
           ineptitude"; "gross injustice"; "rank treachery" syn:
           cryinga, flagrant, glaring, gross, rank
see also:
cryinga flagrant glaring gross rank 

[3] : Moby Thesaurus II by Grady Ward, 1.0

194 moby thesaurus words for "egregious":
   a bit much, abandoned, abominable, absolute, all-embracing,
   all-encompassing, all-out, all-pervading, appalling, arrant,
   astonishing, atrocious, awful, base, beastly, beneath contempt,
   blameworthy, born, boundless, broad-based, brutal, capital,
   classical, clean, clear, complete, comprehensive, congenital,
   conspicuous, consummate, contemptible, crass, decided, deep-dyed,
   definitive, deplorable, despicable, detestable, dire, disgusting,
   downright, dreadful, dyed-in-the-wool, enormous, exaggerated,
   exceptional, excessive, exhaustive, exorbitant, extraordinary,
   extravagant, extreme, fabulous, fancy, fantastic, fetid, filthy,
   flagrant, formidable, foul, fulsome, gigantic, glaring, gluttonous,
   grievous, gross, hateful, heinous, high, horrible, horrid,
   hyperbolic, hypertrophied, immoderate, incontinent, incredible,
   infamous, inordinate, intemperate, intensive, intolerable,
   lamentable, loathsome, lousy, marked, marvelous, monstrous, nasty,
   nefarious, noisome, notable, noteworthy, noticeable, notorious,
   obnoxious, odious, of mark, offensive, omnibus, omnipresent,
   out of bounds, out of sight, out-and-out, outrageous, outright,
   outstanding, overbig, overdeveloped, overgreat, overgrown,
   overlarge, overmuch, overweening, perfect, pervasive, pitiable,
   pitiful, plain, plumb, positive, precious, preposterous, profound,
   pronounced, proper, pure, radical, rank, regrettable, regular,
   remarkable, reprehensible, repulsive, rotten, sad, scandalous,
   schlock, scurvy, shabby, shameful, shattering, sheer, shocking,
   shoddy, signal, sordid, squalid, stark, stark-staring, steep,
   stiff, straight, striking, superior, superlative, surpassing,
   sweeping, terrible, the veriest, thorough, thoroughgoing,
   through-and-through, too bad, too much, total, ubiquitous,
   unbearable, unbridled, unclean, uncommon, unconditional,
   unconscionable, undeniable, undue, unequivocal, universal,
   unmitigated, unqualified, unreasonable, unrelieved, unreserved,
   unrestrained, unrestricted, unspoiled, utter, veritable, vile,
   villainous, wholesale, woeful, wonderful, worst, worthless,
   wretched

Egregious >> E Words
Egregious, definition of term: Egregious
egregious_pag1.html