一切經音義 13.57

13.57

鈍根（䐁頓反蒼頡篇云鈍頑也如淳注史記云頑鈍猶無廉隅也聲類不利也形聲字也）。

Dungen [dull faculties] (the first character is fanqie: tun- + -dun; the Cangjie pian says: 'Dun means stubborn.' Ru Chun's commentary on the Shiji says: 'Stubborn and dull is like having no sharp edges.' The Shenglei says: 'Not sharp; a phono-semantic character').