Open English Wordnet
Adjectives
(a)conventionalfollowing accepted customs and proprieties“conventional wisdom”, “she had strayed from the path of conventional behavior”, “conventional forms of address”
(a)conventional(weapons) using energy for propulsion or destruction that is not nuclear energy“conventional warfare”, “conventional weapons”
(s)conventionalin accord with or being a tradition or practice accepted from the past“a conventional church wedding with the bride in traditional white”, “the conventional handshake”
(s)ceremonious, conventionalrigidly formal or bound by convention“their ceremonious greetings did not seem heartfelt”