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psywar

[sahy-wawr]Informal.
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noun
  1. psychological warfare.
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adjective
  1. of, relating to, or characteristic of psychological warfare: to wage a psywar campaign against the enemy.
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Origin of psywar

An Americanism dating back to 1950–55; by shortening
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018