look on

look on or look upon  {v.}

1. To regard; consider; think of.

The stuff had always been looked on as a worthless factory waste.

Until the day Bob made the touchdown, the other boys had looked upon him as rather a sissy.

2. To be an observer; watch without taking part.

Fred had never been able to do more than look on at athletic sports.

The children played in the park while their mother looked on.

Compare: SIT IN.