Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
impărĭlis (inp-), e, adj. [2. in-parilis], unequal, unlike, different (post-class.): aevum, Aur. Vict. Caes. 14, 9.
Hence, adv.: impărĭlĭter, unequally, Aug. Quest. ap. Hept. 2, 177, 3.