In a manner that can be clearly shown, demonstrated, or proven; evidently.
From 'evincible' with the adverbial suffix '-ly.' This creates an adverb form describing how something is demonstrated or revealed.
Adding '-ly' to adjectives creates adverbs—'evincibly' means 'in an evincible way,' turning a quality (provable) into a description of how something happens, like 'undeniably' or 'clearly.'
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