frighten Copy link Outline 1. terreo, intens. perterreo, 22. expr. by mĕtus, tĭmor, and a verb • frighten: 1. terreo, intens. perterreo, 2: v. to terrify. 2. expr. by mĕtus, tĭmor, and a verb: v. fear. To be f.'d may often be expr. by păvesco, expăvesco: v. preced. art.