League of Nations noun

An international body, formed under a covenant drawn up in 1919, to secure peace, justice, scrupulous observance of treaties, and international co-operation generally, and superseded in 1945 by the United Nations

league table noun

A table in which clubs in a league are placed according to their performances, or (figurative) any grouping made to reflect relative success, importance, etc

in league with

Having made an alliance with, usu for a bad purpose

in the big league (informal)

Among the most important, powerful, etc people, organizations, etc

not in the same league as

Not of the same calibre, ability, importance, etc as

top or bottom of the league (figurative)

The highest or lowest in a particular field of achievement, or in quality