Dictionary.com
Thesaurus.com
Showing results for reactionary. Search instead for reactionaryisms.
Synonyms

reactionary

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

adjective

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

    Synonyms:
    ultraconservative
    Antonyms:
    radical

noun

plural

reactionaries
  1. a reactionary person.

    Synonyms:
    ultraconservative
    Antonyms:
    radical
reactionary British  
/ -ʃənrɪ, rɪˈækʃənərɪ /

adjective

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

"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

noun

  1. a person opposed to radical change

"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
reactionary Cultural  
  1. 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.


Other Word Forms

Etymology

Origin of reactionary

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

Explanation

A reactionary is someone who opposes reform or change, especially in the realm of politics. A reactionary is someone reacting (in horror) to what others consider to be progress. No one describes themselves as reactionary — you will hear it more often as a condemnation, as in "I cannot support the reactionary policy of mandatory military service for 18-year-olds."

Keep Reading on Vocabulary.com

Vocabulary lists containing reactionary

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.

Kennedy has a real talent for taking reactionary, often sadistic ideas and reframing them to sound compassionate and therapeutic.

From Salon • May 18, 2026

Parnell died of pneumonia the next year, at 45, leaving behind the legend of a great man brought low by reactionary forces.

From The Wall Street Journal • Apr. 24, 2026

“I believe the case was a reactionary case that was overcharged,” said attorney Adam Koppekin, who represents an officer whose case was dismissed.

From Los Angeles Times • Apr. 7, 2026

Acting on emotions creates what analysts call a “behavior gap,” which is the difference between strong returns and poor returns that tend to be associated with reactionary decision-making.

From MarketWatch • Apr. 7, 2026

Since he did not hesitate to explain his position in public every time he had the chance, for everyone but his own co-religionists he soon became a caricature of the picturesque, reactionary oligarch.

From "The House of the Spirits: A Novel" by Isabel Allende

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "reactionary" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com