Emphasizes doing something immediately or as soon as possible; as quickly as one can.
事故の連絡を受けて、一刻も早く病院に向かった。
After receiving news of the accident, I headed to the hospital as quickly as possible.
問題を放置せず、一刻も早く対応してください。
Please deal with the problem immediately; don't leave it unaddressed.
薬が切れているので、一刻も早く薬局に行って買ってきます。
My medicine has run out, so I'll go to the pharmacy as soon as possible.
被災地には一刻も早く支援を届ける必要がある。
Relief must be delivered to the disaster area as quickly as possible.