IPA: /aʊtˈwɒtʃ/
KK: /aʊtˈwɑtʃ/
To keep watch for a longer time than someone else or to stay alert beyond a certain point.
He decided to outwatch his friends during the camping trip to ensure their safety.
Past: outwatched
Past Participle: outwatched
Outwatch → It is formed from "out-" (meaning outside or beyond) and "watch" (from Old English "wæccan", meaning to be awake or to guard). The word "outwatch" means to watch or guard from outside or to keep vigil beyond a certain point.
Think of keeping a lookout 'outside' ('out-') while 'watching' ('wæccan') — that's what outwatch means.