Definition of ultra:
I have heard lions of my acquaintance complain of showing themselves off to these ultra- antis, and have asked why they let themselves be made lions, if they disliked it so much, as no lion can well be led about, I should have conceived, quite against his will?- "Tales & Novels, Vol. IX [Contents: Harrington; Thoughts on Bores; Ormond]", Maria Edgeworth.
Is it proper, or prudent, or respectful, when a representative, in accordance with the known will of his constituents, addresses you the language of solemn warning, in conformity to his duty to the Constitution, the Union, and to his own conscience, that his course should be arraigned as the declaration of ultra and dangerous opinions?- "The Rise and Fall of the Confederate Government, Vol. 1 (of 2)", Jefferson Davis.
His ultra- radicalism led him to some wise and reasonable, and other strange and startling conclusions, and these he set before the public in his " Political Justice," the first book he published under his own name.- "Mary Wollstonecraft", Elizabeth Robins Pennell.