About
The character 快, which now primarily means "fast" or "quick", is structured with the semantic component 忄, a variant of the heart radical, combined with the phonetic component 夬. Historically, this character originally conveyed meanings related to happiness, pleasure, or a state of being pleased, aligning with the heart radical's association with inner feelings. Over time, its semantic range expanded to include notions of sharpness or keenness, as in a sharp blade or an acute mind, which gradually shifted toward the idea of rapidity and swiftness in both physical and mental contexts. This evolution in meaning from emotional satisfaction to denoting speed occurred through linguistic usage, while the character's form, consistent in both traditional and simplified systems, retained its fundamental phonetic and semantic components.
Etymology Hide
Example Sentences Hide
快点过来！
我今天很快乐。
火车跑得真快。
快递员送来了包裹。
你快把作业写完。
时间过得快极了。
祝你生日快乐！
快点起床，不然就要迟到了。