I. Inability, want of wealth, poverty: magis propter suam impotentiam se semper credunt neglegi, Ter. Ad. 4, 3, 16.—
II. Want of moderation or self-restraint, ungovernableness, passionate behavior, violence, fury (freq. and class.): “impotentia quaedam animi a temperantia et moderatione plurimum dissidens,” Cic. Tusc. 4, 15, 34; Poet. ap. Cic. Tusc. 4, 16, 35: impotentia commotus animi, Sisenn. ap. Non. 527, 14: “numquam potentia sua ad impotentiam usus,” Vell. 2, 29: “impotentiae exprobratio,” Quint. 6, 2, 16: “muliebris,” Liv. 34, 2, 2; Tac. A. 1, 4; 12, 57: “veteranorum,” id. ib. 14, 31: “nullius astri Gregem aestuosa torret impotentia,” fiery violence, Hor. Epod. 16, 62.