In a manner that is discoverable or capable of being found or revealed; in a way that can be uncovered.
From discoverable + -ly (adverb suffix). Following the pattern of adjective-to-adverb conversion, adding -ly to 'discoverable' creates an adverb describing how something is done.
This is an extremely rare adverb—you'd almost never say 'he acted discoverably'—but it appears in legal writing where precision matters and lawyers need to describe exactly how evidence was made available!
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