迟钝 HSK 7-9 chídùn slow-witted; numbed; obtuse adjective Examples 反应迟钝 fǎnyìng chídùn Slow reaction. 感觉迟钝 gǎnjué chídùn Blunted senses. 思维迟钝 sīwéi chídùn Sluggish thinking.