Reprisal is an act of using force or causing injury for vengeance.(noun)
An example of reprisal is when one country bombs another to retaliate for that country's earlier military hostilities.
See reprisal in Webster's New World College Dictionary
Origin: ME reprisail < MFr reprisaille < It rappresaglia < riprendere, to take back < L reprehendere: see reprehend
See reprisal in American Heritage Dictionary 4
Origin: Middle English reprisail
Origin: , from Old French reprisaille
Origin: , from Old Italian ripresaglia
Origin: , from ripreso
Origin: , past participle of riprendere, to take back
Origin: , from Latin reprehendere, reprēndere, to take hold of; see reprehend.
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