速 sù 🔊 fast 11 strokes + Review this word Meanings sù fastrapidquickvelocity Words with 速 迅速 xùn sù rapid HSK 5 速度 sù dù speed; rate; velocity; (music) tempo HSK 4 高速 gāo sù high speed HSK 4 快速 kuài sù fast; high-speed; rapid HSK 4 加速 jiā sù to accelerate; to speed up; to expedite HSK 5 高速公路 gāo sù gōng lù expressway; highway; freeway 急速 jí sù hurried 航速 háng sù speed (of ship or plane) 速率 sù lǜ speed; rate 增速 zēng sù to speed up; to accelerate 时速 shí sù speed per hour HSK 6 流速 liú sù flow speed