Brown Driver Briggs

 1. to be hard, be severe, be fierce, be harsh
  1) (Qal)
1a1. to be hard, be difficult
1a2. to be hard, be severe
  2) (Niphal)
1b1. to be ill-treated
1b2. to be hard pressed
  3) (Piel) to have severe labour (of women)
  4) (Hiphil)
1d1. to make difficult, make difficulty
1d2. to make severe, make burdensome
1d3. to make hard, make stiff, make stubborn
1d  1) of obstinacy (fig)
1d4. to show stubbornness