[yoon-yuh-niz-uh m]
  1. the principle of union, especially trade unionism.
  2. attachment to a union.
  3. (initial capital letter) loyalty to the federal union of the United States of America, especially at the time of the Civil War.

Origin of unionism

First recorded in 1835–45; union + -ism
Related formspro·un·ion·ism, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for unionism

Contemporary Examples of unionism

  • Given the toxicity of the Conservative “brand” in Scotland, that could prove fatal for unionism.

    The Daily Beast logo
    A Stand-Alone Scotland

    Alex Massie

    January 11, 2012

Historical Examples of unionism

British Dictionary definitions for unionism


  1. the principles of trade unions
  2. adherence to the principles of trade unions
  3. the principle or theory of any union


  1. (sometimes not capital) the principles or adherence to the principles of Unionists
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