Conventional /(?)/

Con·ven·tion·al

Conventional

a.
  1. Formed by agreement or compact; stipulated.
    Conventional services reserved by tenures upon grants, made out of the crown or knights' service.
  2. Growing out of, or depending on, custom or tacit agreement; sanctioned by general concurrence or usage; formal.
    The conventional language appropriated to monarchs.
    The ordinary salutations, and other points of social behavior, are conventional.
    — Latham.
  3. Based upon tradition, whether religious and historical or of artistic rules. (Fine Arts)