Cer`e*mo"ni*ous (?), a. [Cf. F. cérémonieux, L. Caerimoniosus.] 1. Consisting of outward forms and rites; ceremonial. [In this sense ceremonial is now preferred.]

The ceremonious part of His worship.
South.

2. According to prescribed or customary rules and forms; devoted to forms and ceremonies; formally respectful; punctilious. "Ceremonious phrases." Addison.

Too ceremonious and traditional.
Shak.

Syn. -- Formal; precise; exact. See Formal.