= psychological warfare n.; (also) a war in which techniques of psychological warfare are used.

the use (originally as a military strategy) of tactics intended to undermine the morale or allegiance of one's opponent or opponents, as opposed to…

the use of hostile or subversive propaganda to undermine morale and cause confusion and uncertainty; psychological warfare; also in extended use.

= war of nerves n. at phrases 5.

= psy-op, n. a.

= psychological warfare n. at psychological, adj. n.compounds.

(a) In plural = psychological warfare n. at psychological, adj. n.compounds. (b) A noncombative military operation intended to influence the morale…