[ ree-ak-shuh-ner-ee ]
/ riˈæk ʃəˌnɛr i /


of, pertaining to, marked by, or favoring reaction, especially extreme conservatism or rightism in politics; opposing political or social change.

noun, plural re·ac·tion·ar·ies.

a reactionary person.
Sometimes re·ac·tion·ist [ree-ak-shuh-nist] /riˈæk ʃə nɪst/.

Origin of reactionary

1830–40; reaction + -ary; compare French réactionnaire

Related forms

Can be confused

proactive reactionary reactive Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for reactionist

British Dictionary definitions for reactionist



/ (rɪˈækʃənərɪ, -ʃənrɪ) /


of, relating to, or characterized by reaction, esp against radical political or social change

noun plural -aries or -ists

a person opposed to radical change

Derived Forms

reactionism, noun
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

Culture definitions for reactionist


An extremely conservative person or position that not only resists change but seeks to return to the “good old days” of an earlier social order.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.