In a manner that can be or is forced; by means of coercion or compulsion.
From coercible + -ly, the English adverbial suffix derived from Old English -lice. This creates an adverb from an adjective describing how an action is performed or how something is capable of being done.
While theoretically valid, this word almost never appears in real writing because 'coercively' conveys the idea much more naturally. It's a great example of how English builds potential words through its word-formation rules, even if speakers rarely actually use them.
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