toughen up
Verb
Meaning
toughen up (third-person singular simple present toughens up, present participle toughening up, simple past and past participle toughened up)
(idiomatic, transitive, intransitive) To make or become mentally tougher.
Verb
toughen up (third-person singular simple present toughens up, present participle toughening up, simple past and past participle toughened up)
(idiomatic, transitive, intransitive) To make or become mentally tougher.