indomitableness

It was not so much from feelings of animal vivacity that my difficulty came, as from a sense of the indomitableness of the spirit within me.

From Cosmic Consciousness by Alexander J. (Alexander James) McIvor-Tyndall

Such an air was so foreign to his usual bright indomitableness that Mrs. Quentin had the sense of an unfamiliar presence, in which she must observe herself, must raise hurried barriers against an alien approach.

From The Descent of Man and Other Stories by Edith Wharton

—Salviati There are two elements of character which a man should possess, develop, and maintain unstained if he would find favor in feminine eyes: the first is bravery; the second, indomitableness of resolution.

From Hints for Lovers by T. Arnold (Theodore Arnold) Haultain

But it was not so much from the source of animal vivacity that my difficulty came, as from a sense of the indomitableness of the spirit within me.

From Six Centuries of English Poetry Tennyson to Chaucer by James Baldwin

I have heard that with your accustomed indomitableness you have been attempting to instruct your possible jurors of the county upon the just principles of personal liberty and a republican form of government.

From History of Woman Suffrage, Volume II by Elizabeth Cady Stanton