In a manner that follows formal rituals or official procedures with careful attention to tradition and proper form.
From Latin 'caerimonia' (religious rite), combined with the adverbial suffix '-ally'. The word evolved through Old French to describe actions performed with ceremonial formality.
This adverb reveals how English speakers distinguish between doing something *and* doing it *properly*—the '-ally' ending transforms a noun describing rituals into an adverb describing how we perform actions with ceremonial precision, like how a royal guard might ceremonially present a flag.
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