within bounds

within bounds  {adv.} or  {adj. phr.}

1. Inside of the boundary lines in a game; on or inside of the playing field.

You must hit the ball inside the lines of the tennis court or it will not be within bounds.

If you kick the football over a side-line, it will not be in bounds.

2. Inside of a place where one is allowed to go or be.

The soldiers are within bounds on one side of the city, but are out of bounds on the other side.

3. Inside of safe or proper limits; allowable.

If you ask Father for a quarter, he might give it to you, but a dollar would not be within bounds.

He succeeded in keeping his temper within bounds.

Contrast: OUT OF BOUNDS.