godan verb (-ru), intransitive verb
to be traumatized; to be shocked
Casual slang used when an experience leaves a lasting psychological scar or strong shock. Often used in informal conversation among younger speakers.
あのホラー映画、マジでトラウマった。
That horror movie seriously traumatized me.
昔いじめられて
I'm still traumatized from being bullied in the past.