IPA: /aʊtˈduː/
KK: /aʊtˈdu/
To perform better than someone else or to surpass them in an activity or achievement.
She always tries to outdo her previous performances in the competition.
Past: outdid
Past Participle: outdone
Outdo → It is formed from "out-" (meaning beyond or external) and "do" (meaning to perform or act). The word "outdo" means to perform better than someone else or to surpass in action.
Think of going 'beyond' ('out-') in your actions ('do') — that's how you outdo someone.