single-hearted

"Through this election we will fully display the might of the single-hearted unity of our army and people," said Hyon Byong-chol, chairman of a preparatory committee for one of the sub-districts in the election.

From BBC ● Mar. 9, 2014

Elizabeth was a bright, single-hearted young creature, proud, impulsive, and full of generous qualities.

From Silent Struggles by Ann S. (Ann Sophia) Stephens

And here, where the story of this pure, single-hearted, self-sacrificing life began, it shall be ended.

From The Life and Work of Susan B. Anthony (Volume 2 of 2) Including Public Addresses, Her Own Letters and Many From Her Contemporaries During Fifty Years by Ida Husted Harper

Did he fancy that his subtle lieutenant, the associate of all his deep intrigues, the confidant of his darkest schemes, was suddenly to see in him nothing but magnanimity of soul and single-hearted devotedness?

From Davenport Dunn, Volume 2 (of 2) A Man Of Our Day by Charles James Lever

There were as many greedy military adventurers among them as single-hearted pilgrims.

From The Byzantine Empire by Charles William Chadwick Oman