Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
contĭōnālis, e, adj. [contio], belonging to or suitable for an assembly of the people: contionalis prope clamor senatūs, Cic. Q. Fr. 2, 5, 1: genus dicendi, Quint. 8, 4, 1: officium, id. 3, 8, 14: hirudo aerarii, Cic. Att. 1, 16, 11: senex, who went about in the assemblies of the people for the purpose of exciting the multitude, Liv. 3, 72, 4; cf. comitialis.