In a manner that is characteristic of England, the English language, or the Anglican Church.
From 'Anglican' plus the adverbial suffix '-ly,' which transforms adjectives into adverbs describing how something is done. The '-ly' suffix comes from Old English 'līce' meaning 'like' or 'in the manner of.'
This is a pretty rare word—most English speakers would just say 'in an English way' instead, which shows how some perfectly logical word formations never actually catch on in everyday speech.
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