privateerism
/ˌprʌɪvɪˈtɪərɪz(ə)m/rare
noun
The occupation or practice of a privateer. In quot. 1867 (Nautical slang ): behaviour breaching the rules of conduct on a man-of-war.
Origin
Mid 19th century; earliest use found in Littell's Living Age. From privateer + -ism.