Webster's Revised Unabridged Dictionary · 1913

Ceremonious

Ceremonious , adjective

[Compare French cérémonieux, Latin Caerimoniosus.]

[In this sense ceremonial is now preferred.]

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. — Shakespeare