disunionist

[ dis-yoon-yuh-nist ]

/ dɪsˈyun yə nɪst /

a person who advocates or causes disunion.

U.S. History. a secessionist during the period of the Civil War.

Origin of disunionist

An Americanism dating back to 1825–35; disunion + -ist

dis·un·ion·ism, noun

If he does entertain and has expressed such sentiments, he is not to be held up as peculiarly a disunionist.

American Eloquence, Volume II. (of 4) |Various
He said that in talking with a disunionist a few days ago he asked what the South demanded and what would satisfy them.

The Life of Lyman Trumbull |Horace White
At Baltimore, he averred that while Breckinridge was not a disunionist, every disunionist was a Breckinridge man.

Stephen A. Douglas |Allen Johnson
Every Unionist ought to wish the new government to succeed; and every disunionist must desire it to fail.

The Papers And Writings Of Abraham Lincoln, Volume Seven |Abraham Lincoln

Far all practical purposes, then, Mr. Pendleton is just as much a secessionist and disunionist as Jefferson Davis.

The Continental Monthly, Vol. 6, No. 6, December 1864 |Various