na-adjective, noun
great haste; mad rush; panic
Describes a state of extreme hurry or fluster, often with a sense of panic or disarray. Used as a noun or adjectival noun (na-adjective).
寝坊して大慌てで家を出た。
I overslept and left the house in a mad rush.
火事の知らせに、みんな大慌てだった。
Everyone was in a panic at the news of the fire.