incorrigible

adjectives

impervious to correction by punishment
incorrigible
antonym
corrigible
is similar to
unrepentant and incapable of being reformed
"an unregenerate criminal"
unreformable, unregenerate
is similar to
incapable of being controlled or managed
"uncontrollable children"; "an uncorrectable habit"
uncontrollable, uncorrectable, unmanageable
see also
not obeying or complying with commands of those in authority
"disobedient children"
disobedient