Word for kids who have become resistant to scoldings and punishments? [closed]

The parents / Teachers punish these types of kids frequently . As a result they just no longer fear and remain unaffected no matter how much they are scolded. For instance, my mom rebukes my younger brother so often that he has started taking it lightly . I've even seen him tittering while receiving reprimands from mom.

Solution 1:

Inure

inure VERB

[WITH OBJECT] 1. (usually be inured to) Accustom (someone) to something, especially something unpleasant: ‘these children have been inured to violence’

Per your example

This boy is so inured to scolding that no amount of it will deter him from his mischief.

Solution 2:

It's not quite what you're after. However, an incorrigible person is somebody who cannot be deterred or reformed in any way, including through punishment or admonishment.

This boy is so incorrigible that no amount of scolding will deter him from his mischief.

Here's a definition from Google:

incorrigible

ɪnˈkɒrɪdʒɪb(ə)l/

adjective: incorrigible

(of a person or their behaviour) not able to be changed or reformed.

"she's an incorrigible flirt"

synonyms: inveterate, habitual, confirmed, hardened.

Solution 3:

Those kids got hardened by the scoldings/punishments that they got and no longer fear them.

This boy is so hardened that no amount of scolding will deter him from his mischief.

ODO:

hardened ADJECTIVE

2 [attributive] Very experienced in a particular job or activity and therefore not easily upset by its more unpleasant aspects:
‘hardened police officers’

‘Experienced sportsmen become hardened and learn to deal with this sort of thing.’

Solution 4:

Desensitized, literally, 'to become less sensitive to', is another possibility. Ex:"He became desensitized to the pain of the punishments."