In a manner of conquering; with the attitude, style, or behavior of a conqueror; triumphantly or overwhelmingly.
From 'conquering' (present participle of conquer) + '-ly' (adverb suffix), creating an adverb describing how something is done in a conquering manner.
Medieval writers used 'conqueringly' to describe everything from the way a king walked to how sunlight broke through clouds—it carried both power and inevitability.
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