Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
insĭtīcĭus, a, um, adj. [insitio], that is inserted, ingrafted (ante-class. and postAug.); hence, trop.: somnus, that is inserted between the occupations of the day, a noon-day nap, siesta, Varr. R. R. 1, 2, 5: muli, produced from two species of animals, qs. ingrafted, id. ib. 2, 8, 1; App. M. 6, p. 186: (with inductus) sermo, i. e. foreign, Plin. Ep. 4, 3, 5.