Word: 迟钝 (chídùn) Traditional: 遲鈍 迟钝 dictionary entry chídùn slow in one's reactions; sluggish (in movement or thought) Full dictionary entry for 迟钝 Example sentences using 迟钝 2 sentences, showing page 1 of 1. 他反应有点迟钝，你别着急。 Tā fǎnyìng yǒudiǎn chídùn, nǐ bié zháojí. He's a bit slow to react, so don't rush him. 熬夜以后，我的脑子很迟钝。 Áoyè yǐhòu, wǒ de nǎozi hěn chídùn. After staying up late, my mind is very sluggish.