The phone rang during the rushed morning hours.
i-adjective
Less common nuance focusing on the speed or suddenness of an action or change, often implying a lack of calm preparation. Can overlap with sense 1 but emphasizes swiftness over busyness.
慌ただしい足音が近づいてきた。
Rapid footsteps approached.
彼は慌ただしく部屋を出ていった。
He hurriedly left the room.