In a confident manner; with confidence; with strong assurance; positively.(adverb)
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Use "confidently" in a sentence
"It would be very easy to write a very stupid religion-and-Torchwood story; but Minchin confidently takes Gwen and Rhys through matters ecclesiastical, in what for me is the slightly foreign church environment of South Wales."
"To those questioning the stability of this thing, all I can say confidently is that it's totally adequate for the size and weight of my computer - it doesn't budge, even when I (constantly) bump into my desk accidentally."
"What I can state confidently is that Splice is definitely not that ..."