Brown Driver Briggs

 1. to be tender, be soft, be weak
  1) (Qal)
1a1. to be tender, be weak (of heart)
1a  1) to be timid, be fearful
1a  2) to be softened, be penitent
1a2. to be soft (of treacherous words)
  2) (Pual) to be softened
  3) (Hiphil) to cause to be weak
  4) (Niphal) tender