noun
definition
An incorrigibly bad individual.
example
The incorrigibles in the prison population are either lifers or habitual reoffenders.
adjective
definition
Defective and impossible to materially correct or set aright.
example
The construction flaw is incorrigible; any attempt to amend it would cause a complete collapse.
definition
Incurably depraved; not reformable.
example
His dark soul was too incorrigible to repent, even at his execution.
definition
Impervious to correction by punishment or pain.
example
The imp is incorrigible: his bottom is still red from his last spanking when he plans the next prank.
definition
Unmanageable.
definition
Determined, unalterable, hence impossible to improve upon.
example
The laws of nature and mathematics are incorrigible.
definition
Incurable.