In the manner of a sage, with wisdom, wisely.(adverb)
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Use "sagely" in a sentence
"And for the record, I appreciate you using the term "sagely" in reference to me even if it was in jest!"
"Chris, as for President Obama lying, the actions he promised are indeed, as you sagely suggest, still in progress and therefore don't qualify as lies."
"Joe Sixpack nods sagely again … theAmericanist says:"