Definition of conventional:
following accepted customs and proprieties; "conventional wisdom"; "she had strayed from the path of conventional behavior"; "conventional forms of address"
conforming with accepted standards; "a conventional view of the world"
(weapons) using energy for propulsion or destruction that is not nuclear energy; "conventional warfare"; "conventional weapons"
unimaginative and conformist; "conventional bourgeois lives"; "conventional attitudes"
represented in simplified or symbolic form
in 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"
rigidly formal or bound by convention; "their ceremonious greetings did not seem heartfelt"