A person who favors the abolition of any institution, especially negro slavery.(noun)
Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)
Use "abolitionist" in a sentence
"The main abolitionist organization in the U.S. was the The American Missionary Association, indenominational Christian but growing out of the evangelical movement."
"Of course our people did not know what the word abolitionist meant; they evidently"
"The Portent, in 1859, a poem in which he calls the abolitionist John Brown hanging in a tree ""