The Collaborative International Dictionary
Outwatch
Outwatch \Out*watch"\, v. t. To exceed in watching.
Wiktionary
outwatch
vb. 1 To watch more than someone else. 2 To maintain a vigil beyond the end.
Usage examples of "outwatch".
The Egyptian hath belied me to thee—thou knowest not what hours I have spent beneath thy casement—thou knowest not how I have outwatched the stars, thinking thou, my sun, wouldst rise at last—and thou lovest me not, thou forsakest me!