nonlinear

adj

Etymology: Etymology tree English non- English linear English nonlinear From non- + linear.

1. Of a set of points, not lying on a straight line.
2. Of a molecule, whose atoms do not lie in a straight line.
3. Of a function, having a product of independent variables, or a variable with an exponent not equal to one.
4. Of a system, whose output is not directly proportional to its input.
5. Erratic and unpredictable; tending to jump back and forth.

   “a film with a nonlinear plot”