From Longman Dictionary of Contemporary Englisha changed man/womana changed man/womanCHANGE/BECOME DIFFERENTsomeone who has become very different from what they were before, as a result of a very important experience Since she stopped drinking, she’s a changed woman. → changed
Examples from the Corpus
a changed man/woman• Marley said he was sorry for his crimes and insists he's a changed man.• My father came back from the war a changed man.• She returned from her travel a changed woman.• But when he came home he was a changed man.• He emerged from the opera house a changed man.• He lives only for the moment, and he is already a changed man.• Meanwhile, the master strategist, off in Los Angeles, was sixty-nine years old and a changed man.• He's a changed man since Mum went into hospital.• Ian says from then on Robert has been a changed man - withdrawn and completely unapproachable. 