Learn how to say Ceremonious correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word ceremonious:
relating or appropriate to grand and formal occasions:
a Great Hall where ceremonious and public appearances were made
excessively polite; punctilious:
he accepted the gifts with ceremonious dignity
mid 16th century: from French cérémonieux or late Latin caerimoniosus, from Latin caerimonia (see ceremony)