Ceremonious

1.

(Full of ceremony, elaborately performed, very polite or formal) នៃពិធីបុណ្យអ៊ឹកធិក, ដែលគួរសម, នៃសេចក្ដីគួរសមខ្លាំងពេក
Example: A ceremonious bow, a ceremonious reception.ceremonious manner ដែលប្រកាន់តាមពិធី

1.

Consisting of outward forms and rites; ceremonial. [In this sense ceremonial is now preferred.]

2.

According to prescribed or customary rules and forms; devoted to forms and ceremonies; formally respectful; punctilious.

1.

affected, correct, decorous, exact, formal, methodical, precise, proper, regular, solemn, stiff

1.

easy, natural, unconstrained, unconventional