Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun ceremonial

1 sense of ceremonial

Sense 1
ceremony, ceremonial, ceremonial occasion, observance -- (a formal event performed on a special occasion; "a ceremony commemorating Pearl Harbor")
       => affair, occasion, social occasion, function, social function -- (a vaguely specified social event; "the party was quite an affair"; "an occasion arranged to honor the president"; "a seemingly endless round of social functions")

Antonyms of adj ceremonial

1 sense of ceremonial

Sense 1
ceremonial -- (marked by pomp or ceremony or formality; "a ceremonial occasion"; "ceremonial garb")

INDIRECT (VIA formal) -> informal -- (not formal; "conservative people unaccustomed to informal dress"; "an informal free-and-easy manner"; "an informal gathering of friends")

Similarity of adj ceremonial

1 sense of ceremonial

Sense 1
ceremonial -- (marked by pomp or ceremony or formality; "a ceremonial occasion"; "ceremonial garb")
       => formal (vs. informal) -- (being in accord with established forms and conventions and requirements (as e.g. of formal dress); "pay one's formal respects"; "formal dress"; "a formal ball"; "the requirement was only formal and often ignored"; "a formal education")