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Related to warfare: Trench warfare
Conflict between different socio-economic classes The politician was accused of trying to promote class warfare with his comments about the haves and the have-nots.
The use of threats, intimidation, or other such tactics to try to bring about a particular outcome. The dropping of leaflets announcing the bombing campaign was really just psychological warfare. All right, I'll go to the family dinner if only to get mom to stop her psychological warfare. I can't stand the way she tries to guilt me!
See also: warfare