About
快 is a phono-semantic compound: the heart radical 忄 (xīn) gives the meaning, and the right component 夬 (guài, 'parted' or 'forked') provides the sound. The original meaning was a feeling of gladness or inner satisfaction. Because a cheerful, eager state of mind often leads to brisk, energetic action, the character also came to mean 'swift' or 'fast'. In modern usage, 'fast' is the most common meaning, though the original sense of 'happy' survives in many compounds for joy and pleasure.
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。
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