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negativism

[neg-uh-ti-viz-uh m]
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noun
  1. a negative or pessimistic attitude.
  2. Psychology. a tendency to resist external commands, suggestions, or expectations, or internal stimuli, as hunger, by doing nothing or something contrary or unrelated to the stimulus.
  3. any system of negative philosophy, as agnosticism or skepticism.
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Origin of negativism

First recorded in 1815–25; negative + -ism
Related formsneg·a·tiv·ist, nounneg·a·tiv·is·tic, adjectivenon·neg·a·tiv·ism, nounnon·neg·a·tiv·is·tic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for negativist

negativism

noun
  1. a tendency to be or a state of being unconstructively critical
  2. any sceptical or derisive system of thought
  3. psychiatry refusal to do what is expected or suggested or the tendency to do the opposite
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Derived Formsnegativist, noun, adjectivenegativistic, adjective
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

Word Origin and History for negativist

negativism

n.

1824, "the policy of opposition;" see negative + -ism. In a psychological sense, it is attested from 1892.

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Online Etymology Dictionary, © 2010 Douglas Harper

negativist in Medicine

negativism

(nĕgə-tĭ-vĭz′əm)
n.
  1. A tendency to do the opposite of what one is requested to do, or to resist stubbornly for no apparent reason.
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Related formsnega•tiv•ist n.neg′a•tiv•istic adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.