Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
mūnis, e, adj. [cf. munus], ready to be of service or to oblige, obliging (ante-class.): dico ejus pro meritis gratum me et munem fore, Plaut. Merc. prol. 105: munifici munesque viri, Lucil. ap. Non. 23, 15; cf.: munem significare … officiosum: unde e contrario immunis dicitur, qui nullo fungitur officio, Paul. ex Fest. p. 143 Müll.