He became jaded from years of work as a police officer.
a public jaded by political scandals
Oh, yes, mate, they're all jaded here now—their last gasps of innocence sucked out of them by Olympic pharaohs who at first played a blatant game of bait-and-switch with Games tickets, furtively putting aside vast quantities of the best seats to sell to fat cats at higher prices. —Gary Smith, Sports Illustrated, 11 Sep. 2000
I'm jaded with the pulls on me that I can't answer to. I've made up my mind that with a few people to abet me I won't do one single thing in verse or out of it or with it till I God damn please for the rest of my natural life. —Robert Frost, letter, 12 Aug. 1924