secede
verb
se·cede si-ˈsēd 
seceded; seceding
intransitive verb
: to withdraw from an organization (such as a religious communion or political party or federation)
seceder noun
Example Sentences
South Carolina seceded from the Union in 1860.
Recent Examples on the Web The vote prompted roughly three dozen parishes — including 11 in Bishop Lee’s diocese — to secede over the next three years and affiliate with more conservative international branches of the Anglican Communion. 
Emily Langer, Washington Post, 13 July 2022 The proclamation moreover guaranteed freedom to enslaved people in secessionist states like Texas, but not Union states like Maryland, which did not secede during the Civil War. Chelsey Cox, USA TODAY, 15 June 2022 Meanwhile, one tiny region at the farthest edge of the continent is trying to secede from its home country and join Russia. Tristan Bove, Fortune, 31 Mar. 2022 Maryland, a border state during the secession crisis, was Southern-leaning but ultimately did not secede. Tamela Baker, baltimoresun.com, 1 Mar. 2022 This concern is echoed in the fact that 35% of respondents anticipate a second civil war during their lifetimes, and 25% believe that at least one state will secede. Nicole Goodkind, Fortune, 9 Feb. 2022 Anchorage voters won’t see an advisory vote on whether Eagle River should secede from the municipality on the upcoming April ballot. Emily Goodykoontz, Anchorage Daily News, 21 Jan. 2022 An increase in violent crime has spurred a movement in Atlanta’s wealthiest and whitest neighborhood, Buckhead, to push harder to secede and create a new city with its own police force. Cameron Mcwhirter, WSJ, 20 Jan. 2022 One speaker was an older man who compared the resolution to the decades-old State of Jefferson movement, which calls for California’s rural, conservative northern counties to secede and form their own state. Los Angeles Times, 29 Nov. 2021 See More
Emily Langer, Washington Post, 13 July 2022 The proclamation moreover guaranteed freedom to enslaved people in secessionist states like Texas, but not Union states like Maryland, which did not secede during the Civil War. Chelsey Cox, USA TODAY, 15 June 2022 Meanwhile, one tiny region at the farthest edge of the continent is trying to secede from its home country and join Russia. Tristan Bove, Fortune, 31 Mar. 2022 Maryland, a border state during the secession crisis, was Southern-leaning but ultimately did not secede. Tamela Baker, baltimoresun.com, 1 Mar. 2022 This concern is echoed in the fact that 35% of respondents anticipate a second civil war during their lifetimes, and 25% believe that at least one state will secede. Nicole Goodkind, Fortune, 9 Feb. 2022 Anchorage voters won’t see an advisory vote on whether Eagle River should secede from the municipality on the upcoming April ballot. Emily Goodykoontz, Anchorage Daily News, 21 Jan. 2022 An increase in violent crime has spurred a movement in Atlanta’s wealthiest and whitest neighborhood, Buckhead, to push harder to secede and create a new city with its own police force. Cameron Mcwhirter, WSJ, 20 Jan. 2022 One speaker was an older man who compared the resolution to the decades-old State of Jefferson movement, which calls for California’s rural, conservative northern counties to secede and form their own state. Los Angeles Times, 29 Nov. 2021 See More Word History
Etymology
Latin secedere, from sed-, se- apart (from sed, se without) + cedere to go — more at suicide
First Known Use
1749, in the meaning defined above
Kids Definition
secede
verb
se·cede si-ˈsēd
seceded; seceding
: to end an association with an organization (as a country)