1) An incorrigible liar 2) Beyond reform 3) Delinquent 4) Depraved 5) Disobedient 6) French word used in English 7) Incorrigible hair 8) Not corrigible 9) Uncontrollable 10) Uncorrectable 11) Unmanageable 12) Unreformable 13) Unregenerate 14) Unruly 15) Willful 1) Bodacious 2) Chronic 3) Disobedient 4) Hopeless 5) Irreformable 6) Uncorrectable 7) Uncorrigible 
• (a.) Not corrigible; incapable of being corrected or amended; bad beyond correction; irreclaimable; as, incorrigible error. • (n.) One who is corrigible; especially, a hardened criminal; as, the perpetual imprisonment of incorrigibles.
In·cor'ri·gi·ble adjective [ Latin incorrigibilis : confer French incorrigible . See In- not, and Corrigible .] Not corrigible; incapable of being corrected or amended; bad beyond correction; irreclaimable; as, incorrigible error. ' Incorrigible fools.' ...In·cor'ri·gi·ble noun One who is incorrigible; especially, a hardened criminal; as, the perpetual imprisonment of incorrigibles . 
[adj] - impervious to correction by punishment
adjective impervious to correction by punishment
not corrigible; bad beyond correction or reform: incorrigible behavior; an incorrigible liar. · impervious to constraints or punishment; willful; unruly; uncontrollable: an incorrigible child; incorrigible hair. · firmly fixed; not easily changed: an incorrigible habit. · not easily swayed or influenced: an incorrigible optimist.
[SAT terms] impervious to correction by punishment
impervious to correction by punishment[Intelligent words] impervious to correction by punishment