all is fair in love and war


Also found in: Acronyms.

all is fair in love and war

Otherwise questionable actions are acceptable under extenuating circumstances. Often written as "all's fair in love and war." A: "I can't believe you took credit for my idea just so you would look good to the boss!" B: "Come on, all is fair in love and war!"
See also: all, and, fair, love, war
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