energy Copy link Outline 1. vis, vim, vi, f.2. virtus, ūtis, f. (including all forms of manly worth and power)3. vĕhĕmentia4. impĕtus, ūs (with reference to what may be done by a rush, at a heat)5. contentio (of effort put forth in speaking) • energy: 1. vis, vim, vi, f.: quickened e. of soul, vivida v. animi, Lucr. 1, 73: v. force, vigour. 2. virtus, ūtis, f. (including all forms of manly worth and power): e. of mind, v. animi, Sall. Cat. 1, 2, etc. 3. vĕhĕmentia: v. violence, vehemence. 4. impĕtus, ūs (with reference to what may be done by a rush, at a heat): no e. or force (in speech), nec ullus im. nec vis, Cic. Or. 68, 229: v. impetuosity, fire (fig.). 5. contentio (of effort put forth in speaking): to speak with greater e., vocis c. majore uti, Cic.: and comp. energetic (fin.). Phr.: a man of e., vir acer, strenuus, etc. (v. energetic): with e., acriter, strenue, etc.: v. energetically.