not in the same league as Definition

league¹
noun

1. A union of persons, nations, etc formed for the benefit of the members.

Thesaurus: alliance, association, class, category, coalition, confederation, federation, fraternity, union, syndicate, cartel.
2. A group of sports clubs which compete over a period for a championship.
3. A class or group, considered in terms of ability, importance, etc.

verb

tr & intr
leagued, leaguing
1. To form or be formed into a league.

Idiom: bottom of the league (top of the league)

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

Idiom: in league with someone

Acting or planning with them, usually for some unfavourable outcome or purpose.

Idiom: in the big league

colloq
Amongst the most important, powerful, etc people, organizations, etc.

Idiom: not in the same league as

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

Etymology: 15c: from Latin ligare to bind.