Onside (adjective)

Being in compliance with the rules or in a legally or morally acceptable position.

Origin:

Mid 19th century, from on + side.

Examples:

1. The player was onside during the goal and the referee allowed the goal.
2. The company was onside with the regulations and was able to operate legally.
3. The lawyer's argument was onside and the judge allowed it.
4. The team was onside with the coach's strategy and they won the game.
5. The politician was onside with the voters and was elected.