Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
lŭpor, āri, v. dep. n. [lupa, II.], to associate with lewd women: cum meretrice per vias lupantur, Atta ap. Non. 133, 11 (Com. Rel. v. 3 Rib.): impune lupari, Lucil. ib. 15.