incorrigible
adjective
[ ɪnˈkɒrɪdʒɪb(ə)l ]
• (of a person or their behaviour) not able to be changed or reformed.
• "he’s an incorrigible liar"
Similar:
inveterate,
habitual,
confirmed,
hardened,
incurable,
unreformable,
irreformable,
irredeemable,
intractable,
hopeless,
beyond hope/redemption,
chronic,
diehard,
deep-dyed,
dyed-in-the-wool,
long-standing,
addicted,
hardcore,
impenitent,
uncontrite,
unrepentant,
unapologetic,
unashamed,
impossible,
incorrigible
noun
• an incorrigible person.
• "all repeat offenders, but none of them real hard-case incorrigibles"
Origin:
Middle English: from Old French, or from Latin incorrigibilis, from in- ‘not’ + corrigibilis (see corrigible).