נָכַל nâkal (H5230)

to defraud, i.e. act treacherously

1) to be deceitful, be crafty, be knavish 1a) (Qal) 1a1) to be knavish 1a2) deceiver (participle) 1b) (Piel) to beguile 1c) (Hithpael) to act craftily, act knavishly, deal knavishly

a primitive root;