In a manner showing deep thought or careful consideration; with a contemplative attitude.
From contemplating (present participle of contemplate) plus -ly (adverbial suffix). This double-suffixed formation is common but sounds slightly literary or formal.
When a character in a novel acts 'contemplatingly,' it signals serious, introspective action—gazing contemplatingly at the sea, moving contemplatingly through a room—the adverb carries philosophical weight.
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