Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
axĭtĭōsus, a, um, adj. [kindred with Gr. ], acting together, in combination; of a party: Axitiosae annonam caram e vili concinnant viris, Plaut. ap. Varr. L. L. 7, § 66 Müll.: Mulier es, uxor
Cuja vis?
Ego novi: scio axitiosam, id. ib.