taru-adjective, adverb taking the 'to' particle
coldly; indifferently; aloofly
Literary adverb describing a cold, unsympathetic attitude. Often used with と and verbs like 言う, 見る, or 扱う.
彼は私の頼みを冷然と断った。
He coldly refused my request.
彼女は冷然とした目つきで私を見た。
She looked at me with cold, indifferent eyes.