悤

A phono-semantic compound composed of:

心 — semantic component meaning “heart; mind”; 囱 — phonetic component indicating the sound (총). The character conveys the idea of a restless or unsettled mind, leading to the meaning busy or hurried.
Semantic development: - restless or unsettled mind; - hasty or urgent state; - busy or rushed condition.

悤 is mostly seen in classical or variant forms, while 匆 is the standard modern character for “hurried.” Several simplified or variant forms (忩, 怱) developed from the same phonetic element. The character reflects the idea of mental haste, not just physical busyness.
Related characters: 匆 — hurried 忙 — busy 急 — urgent

匆 / 怱 / 忩 — hurried; hasty (variant or simplified forms)