人-66 急Ⅰ(动) ① be impatient; be anxious Ⅱ(形) ① fast; rapid; violent ② urgent; pressing

急   急是形声会意字。心为形符；及为声符，也是意符（含人）。《说文》注：“褊也。从心，及声。”急义为心胸狭窄、狭隘。又指心情紧迫。急与“缓”相对。引申紧急、危急、迅速、猛烈。

急Ⅰ(动) ① be impatient; be anxious② worry③ be irritated; be annoyed; be nettled ④ be eager to help Ⅱ(形) ① fast; rapid; violent ② urgent; pressing