Here's what rhymes with nonlinearity.

Consider these alternatives

nonlinear / linear attenuation / relation nonlinearities / linearities univariate / late amplitude / food obscuration / relation diffusive / exclusive parasympathetic / magnetic remyelination / relation materialisation / relation generalisation / relation gibberellin / telling metastability / stability perturbation / education innervation / information excitation / operation bioactivity / activity hydrocele / feel waveguides / rights dynamical / mechanical quantizing / rising decussation / operation oscillatory / story linearization / information pleiotropic / logic