I. noun
1.
Synonyms: alliance 2, anschluss, coalition, confederacy, confederation, federation, union
2.
Synonyms: association 2, brotherhood, club, fellowship, fraternity, guild, order, society, sodality, union
3.
Synonyms: class 1, category, grade, group, grouping, pigeonhole, tier
4.
a group of sports clubs or teams that play one another competitively
the new baseball league
Synonyms: association, circuit, conference, loop, wheel
Related Word: division
II. verb
Synonyms: unite 2, band, coadjute, combine, concur, conjoin, cooperate