עָקַשׁ ʻâqash (H6140)

to knot or distort; figuratively, to pervert (act or declare perverse)

1) to be perverse, twist, pervert, make crooked, prove perverse, declare perverse 1a) (Niphal) to be crooked 1b) (Piel) to twist, distort, pervert, make crooked 1c) (Hiphil) to declare crooked 1d) (Qal) perverse

a primitive root;