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.