na-adjective
looking busy; appearing restless
Describes someone's appearance or manner as seeming busy, hurried, or restless. Often used with に or な to modify verbs or nouns.
彼は忙しげに書類をめくっていた。
He was flipping through the documents with a busy look.
忙しげな様子で部屋を出ていった。
He left the room looking restless.