DictionaryRoot: caerimonia
Latin
caerimonia
reverent rite; sacred ceremony
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adjective
ceremonious
sair-uh-MOH-nee-us/ˌserəˈməʊniəs/
Marked by formal ritual or elaborate politeness.
Etymology
The sacred-rite sense of caerimonia broadened to include social formalities and polite customs. Ceremonious characterizes someone who carefully observes those outward forms, not merely something connected with a ceremony.