Plural of ceremonialist; multiple people who practice, study, or emphasize the importance of formal ceremonies and rituals.
From ceremony + -alist + -s (plural). The plural form follows standard English conventions of adding -s to noun forms ending in -ist.
In the history of Christianity, ceremonialists clashed with Protestants who thought rituals were unnecessary—the 'ceremony wars' were actually about whether form or faith mattered more.
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