Synonyms of convention

1 Syllable
pact, meet, show
2 Syllables
contract, pow-wow, forums, bargain, rally, bargains, powwow, folkway, caucus, wingding, meeting, councils, gabfest, congress, rallies, tenue, rightness, fashion, rituals, confab, heirship, council, treaties, fashions, treaty, cultism, members, ritual, habit, forum, mainstreams
3 Syllables
humanism, practice, assembly, traditions, caucuses, symposiums, companies, usage, punctilio, transaction, gathering, transactions, decorums, tradition, jamboree, seminar, clambake, behavior, decretum, covenant, doctrine, principle, rightfulness, congresses, seminars, bargained, jubilee, concordat, decorum, behaviors, company, symposium
4 Syllables
delegation, delegates, covenanted, convocation, convenance, heritage, stereotype, covenanting, convocations, etiquette, assuetude, ethnology, assemblage, institute
6 Syllables
representatives, conventionalities, conventionality