IPA: /aʊtˈpɜːrfɔːrm/
KK: /aʊtˈpɜrˌfɔrm/
To do better than someone or something else in a particular activity or task.
The new model will outperform the previous version in speed and efficiency.
Past: outperformed
Past Participle: outperformed
Outperform → It is formed from "out-" (meaning beyond or surpassing) and "perform" (from Latin "performare", meaning to carry out or accomplish). The word "outperform" means to surpass in performance or achievement.
Think of going 'beyond' ('out-') what is 'accomplished' ('perform') — that's why outperform means to do better than others.