1. participation We speak of an alliance of nations, a club of pleasure-seekers, a community of Shakers, a company of soldiers or of friends, a confederacy, confederation, federation, or union of sepa Synonyms: association, alliance, confederacy, familiarity, lodge, club, confederation, federation, participation, community, conjunction, fellowship, partnership, companionship, connection, fraternity, society, company, corporation, friendship, union Antonyms: disintegration, independence, isolation, separation, solitude