guerrilla
adjective/ɡəˈrɪlə/
/ɡəˈrɪlə/
(also guerilla)
[only before noun]- organized in an informal way and without official permission or approval
- Guerrilla actors took to the streets in army fatigues to protest against the war.
- guerrilla marketing (= marketing that uses unusual methods in order to achieve the greatest effect for the smallest amount of money)
- guerrilla gardening (= growing plants on land that you do not own to make it more attractive)
Word Originearly 19th cent. (introduced during the Peninsular War): from Spanish, diminutive of guerra ‘war’.
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guerrilla