kāʾav כָּאַב ‘to pain’ (Hebrew)

Etymology^?: a primitive root

kāʾav v
1) to be in pain, be sore, have pain, be sorrowful
 1a) (Qal)
  1a1) to be in pain (physical)
  1a2) to be in pain (mental)
 1b) (Hiphil)
  1b1) to cause pain, hurt, mar
  1b2) pain, mar (participle)