or gue·ril·la

[ guh-ril-uh ]
/ gəˈrɪl ə /


a member of a band of irregular soldiers that uses guerrilla warfare, harassing the enemy by surprise raids, sabotaging communication and supply lines, etc.


pertaining to such fighters or their technique of warfare: guerrilla strongholds; guerrilla tactics.

Origin of guerrilla

1800–10; < Spanish, diminutive of guerra war (< Germanic; cf. war1); orig. in reference to the Spanish resistance against Napoleon; the name for the struggle erroneously taken as a personal noun
Related formsguer·ril·la·ism, nounan·ti·guer·ril·la, noun, adjectivecoun·ter·guer·ril·la, adjective
Can be confusedgorilla guerrilla Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for guerrilla

British Dictionary definitions for guerrilla



/ (ɡəˈrɪlə) /


  1. a member of an irregular usually politically motivated armed force that combats stronger regular forces, such as the army or police
  2. (as modifier)guerrilla warfare
a form of vegetative spread in which the advance is from several individual rhizomes or stolons growing rapidly away from the centre, as in some cloversCompare phalanx

Derived Formsguerrillaism or guerillaism, noun

Word Origin for guerrilla

C19: from Spanish, diminutive of guerra war
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012