_Ignorantia legis neminem excusat._—Ignorance of the law excuses no one. _Il a le diable au corps._—The devil is in him. _Imitatores, servum pecus._—Imitators, a servile herd. _Imperium in imperio._—One government existing within another. _Impransus._—One who has not dined. _Imprimatur._—Let it be printed. _Imprimis._—In the first place. _Impromptu._—A prompt remark without study. _In articulo mortis._—At the point of death. _In capite._—In the head. _In cœlo quies._—There is rest in heaven. _In commendam._—In trust. _In conspectu fori._—In the eye of the law; in the sight of the court. _In curiâ._—In the court. _In duplo._—Twice as much. _In equilíbrio._—Equally balanced. _In esse._—In being. _In extenso._—At full length. _In extremis._—At the point of death. _In formâ pauperis._—As a pauper. _In foro conscientiæ._—Before the tribunal of conscience. _In hoc signo vinces._—In this sign thou shalt conquer. _In limine._—At the threshold. _In loco._—In the place. _In medias res._—Into the midst of things. _In memoriam._—To the memory of. _In perpetuum._—Forever. _In petto._—In reserve; in one’s breast. _In posse._—In possible existence. _In posterum._—For the time to come. _In propriâ personâ._—In his own person. _In puris naturalibus._—Quite naked. _In re._—In the matter of. _In situ._—In its original situation. _In statu quo._—In the former state. _In te, Domine, speravi._—In thee, Lord, have I put my trust. _In terrorem._—By way of warning. _In totidem verbis._—In so many words. _In toto._—Altogether. _In transitu._—On the passage. _In utrumque paratus._—Prepared for either event. _In vacuo._—In empty space, or in a vacuum. _In vino veritas._—There is truth in wine. _Incognito._—Disguised; unknown. _Index expurgatorius._—A list of prohibited books. _Infra dignitatem._—Beneath one’s dignity. _Innuendo._—Covert meaning; indirect hint. _Inops consilii._—Without counsel. _Insouciance._—Carelessness; indifference. _Instar omnium._—One will suffice for all; an example to others. _Inter alia._—Among other things. _Inter arma leges silent._—In the midst of arms the laws are silent. _Inter nos._—Between ourselves. _Inter se._—Among themselves. _Ipse dixit._—He himself said it; dogmatic assertion. _Ipsissima verba._—The very words. _Ipso facto._—By the fact itself; actually. _Ipso jure._—By the law itself. _Ira furor brevis est._—Anger is brief madness. _Ita lex scripta est._—Thus the law is written. _Item._—Also. _Jacta est alea._—The die is cast. _Jamais arrière._—Never behind. _Je ne sais quoi._—I know not what. _Jet d’eau._—A jet of water. _Jeu de mots._—Play upon words; a pun. _Jeu d’esprit._—A witticism.