callers is a form of:

Ceremonious



adjective
1.
(Full of ceremony, elaborately performed, very polite or formal) នៃពិធីបុណ្យអ៊ឹកធិក, ដែលគួរសម, នៃសេចក្ដីគួរសមខ្លាំងពេក
Example: A ceremonious bow, a ceremonious reception.ceremonious manner ដែលប្រកាន់តាមពិធី
ENGLISH MEANING
adjective
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