league

A league is a group of sports teams that play against each other.

Example: Rodriguez won the American League most-valuable-player award in 2003 and 2005.

A league is a group of people who have joined together to promote a similar idea.

Example: The League of Conservation Voters is one of the largest and most political environmental groups in the country.

If you are not in the same league as somebody else, they are much better than or different from you.

Example: The Toyota Corolla is not even in the same league as the beautiful new Jaguar.

If you are out of your league, you're trying something too difficult for you.

If you are in league with somebody, you are working with them, usually in secret and for a bad reason.