conclusively
adverb C1- In a conclusive manner; with finality; decisively. · Once the final experiment had been performed, the theory was conclusively proved.
- By way of conclusion.
From the library
He then had it returned and obtained another—a most instructive incident, since it proved conclusively to my mind that we were dealing with a real hound, as no other supposition could explain this anxiety to obtain an old boot and this indifference to a new one.
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