Synonyms for Fraternity:

n.

clinic, class, committee, corps. haze, rush, chapter house, greek, Phi Beta Kappa, Hazing, pledge. academy (noun)
circle, league.
association (noun)
coalition, congress, troupe, Family, company, crowd, band, mob, tribe, clique, organization, sodality, ring, clan, outfit, bunch, union, crew, gang.
brotherhood (noun)
coterie, comradeship, organization, Greek letter society.
circle (noun)
cabal, party, school, assembly, set, posse, class.
crew (noun)
school, sect, phalanx, detail, outfit, assemblage, retinue, battalion, cadre, pack, complement, band, wing, cell, clan, posse, faction, herd, ring, bevy, fleet, junta, union, regiment, division, troop, drove, party, group, fellowship, mob, troupe, clique, team, crowd, staff, string, squad, nest, colony, club, company, society, crew, brigade, army, detachment, cabal, collection, aggregation, coalition, league, tribe, body, gang, circle, set, covey, force, assembly, caucus, litter, host, bunch, flock, platoon, coterie, hive.
fraternity (noun)
club, fellowship, order, guild, sorority, camaraderie, kinship, brotherhood, society, sodality, frat, sisterhood.
kinship (noun)
kinfolk, fatherhood, father, cousin, heredity, Family, flesh, mother, relation, nephew, motherhood, relative, paternity, lineage, niece, sisterhood, aunt, brother, kin, uncle, ancestor, maternity, sister, consanguinity, blood, kinship, brotherhood.
order (noun)
sect, sisterhood, brotherhood.
organization (noun)
body, aggregation, squad, team.
partnership (noun)
faction, togetherness.

Other synonyms:

comradeship, togetherness, Phi Beta Kappa, Hazing, camaraderie. guild, goodwill, haze, chapter house. organization. congress, pledge. greek. love. rush. order. Other relevant words:
comradeship, camaraderie, class, congress, goodwill, organization, guild, frat, love, Hazing, order, committee, corps, togetherness, sodality.

Usage examples for fraternity

  1. It rooted in fraternity and fraternity supported its trunk and all its branches. – The Rise and Fall of the Confederate Government, Vol. 1 (of 2) by Jefferson Davis
  2. That detestable fraternity has nearly always persecuted heresy at other people's expense, but this man was willing to tax himself for that laudable object. – Prisoner for Blasphemy by G. W. [George William] Foote
  3. N. Names, exchanging, an Indian league of fraternity – The Life and Voyages of Christopher Columbus (Vol. II) by Washington Irving