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antislavery

American

[an-tee-sley-vuh-ree, -sleyv-ree, an-tahy-] / ˌæn tiˈsleɪ və ri, -ˈsleɪv ri, ˌæn taɪ- /

noun

opposition to slavery.

adjective

of or relating to antislavery.

The antislavery movement in the United States gained momentum in the early 19th century.

antislavery British

/ ˌæntɪˈsleɪvərɪ /

adjective

opposed to slavery, esp slavery of Black people

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of antislavery

An Americanism dating back to 1810–20; anti- + slavery

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

His conversion to the antislavery cause came suddenly.

From The Wall Street Journal • Dec. 3, 2025

“There was this perception that antislavery Republicans hadn’t been sufficiently aggressive,” Waite said.

From Los Angeles Times • Sep. 13, 2025

Southern postmasters instituted a comprehensive censorship of mail to prevent antislavery literature from reaching the South.

From Salon • Jul. 26, 2025

And so the leading contenders to the presidency that year were William Seward, who was staunchly antislavery, and Lincoln, who is considered to be a compromise.

From Slate • Jul. 10, 2025

Once again, Wendell Phillips and other abolitionists told Anthony that her behavior was compromising the antislavery cause.

From "Votes for Women!" by Winifred Conkling

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023