nonlinear

epälineaarinen puhekieltä not lying on a straight line
puhekieltä whose atoms do not lie in a straight line
puhekieltä having a product of independent variables, or a variable with an exponent not equal to one
puhekieltä whose output is not directly proportional to its input
erratic and unpredictable; tending to jump back and forth

a film with a nonlinear plot