Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* cŏ-exercĭtātus, a, um, exercised together or at the same time: artem constare ex perceptionibus consentientibus et coexercitatis ad finem vitae, Quint. 2, 17, 41 (as a transl. of the Gr. ἐγγεγυμνασμέναι καταλήψεις).