Ceremonious /(?)/

Cer·e·mo·ni·ous

Ceremonious

a.
  1. Consisting of outward forms and rites; ceremonial. [In this sense ceremonial is now preferred.]
    The ceremonious part of His worship.
  2. According to prescribed or customary rules and forms; devoted to forms and ceremonies; formally respectful; punctilious.
    Too ceremonious and traditional.