Definition of "imprudence"

Ah: my dear—Madam there is the great mistake—'tis this very conscious Innocence that is of the greatest Prejudice to you—what is it makes you negligent of Forms and careless of the world's opinion—why the consciousness of your Innocence—what makes you thoughtless in your Conduct and apt to run into a thousand little imprudences—

1777, Richard Brinsley Sheridan, The School for Scandal, IV.iii

At about the age of twenty-three, to crown his other imprudences, he married, without improving his reduced circumstances thereby.

1753, Theophilus Cibber, The Lives of the Poets of Great Britain and Ireland (1753)‎

Yes, for six months he threw all his medicines in the fire, and designedly committed all sorts of imprudences.

1891, Francois Coppee, Ten Tales‎

This man finally fell a victim to his diplomacies, perhaps also to his imprudences.

1903, S.C. Hill, Three Frenchmen in Bengal‎

He [Timothy Forsyte] had never committed the imprudence of marrying or encumbering himself in any way with children.

1906 – 1921, John Galsworthy, “Encounter”, in The Forsyte Saga, volume 1