Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dēspĭcĭentĭa, ae, f. [despicio], a despising, contempt (very rare; perh. only in Cic.): in omnium rerum humanarum contemptione ac despicientia, Cic. Tusc. 1, 40: rerum externarum, id. Off. 1, 20: animi, id. ib. 2, 11: in contemnendis honoribus, id. Part. Or. 23, 81.