Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
rūrālis, e, adj. [rus], of or belonging to the country, rural, rustic (post-class.): negotia, Amm. 30, 2, 10: opus (Hesiodi), Macr. S. 5, 2: Apollo, Nemes. Ecl. 1, 65.
Adv.: rūrālĭter, rurally, Cassiod. Var. 3, 51.