Incorrigible1. (a.) Not corrigible; incapable of being corrected or amended; bad beyond correction; irreclaimable; as, incorrigible error.
2. (n.) One who is corrigible; especially, a hardened criminal; as, the perpetual imprisonment of incorrigibles.
Thesaurus Entries
bad, beyond control, beyond recall, beyond remedy, breachy, chronic, confirmed, contumacious, cureless, deep-dyed, deep-fixed, deep-rooted, deep-seated, deep-set, deep-settled, defiant, dyed-in-the-wool, established, fast, fixed, fractious, gone, graceless, habitual, hardened, hopeless, immedicable, implanted, inculcated, incurable, indocile, indomitable, infixed, inflexible, ingrained, inoperable, instilled, insuppressible, intractable, inveterate, irreclaimable, irrecoverable, irredeemable, irreformable, irremediable, irreparable, irrepressible, irretrievable, irreversible, irrevocable, long-established, lost, naughty, obdurate, obstreperous, out of hand, past hope, past praying for, recalcitrant, refractory, remediless, resistant, resisting, restive, rooted, ruined, set, settled, settled in habit, shrewish, shriftless, sinful, stubborn, terminal, thorough, unalterable, unbiddable, unchangeable, uncontrollable, undone, ungovernable, unmalleable, unmanageable, unmitigable, unmoldable, unredeemable, unregenerate, unrelievable, unruly, unsalvable, unsalvageable, unsubmissive, villainous, wicked, wild