猖獗 しょうけつ Meanings Noun, する verb, Intransitive spreading; infesting; running rampant See also: 猖獗を極める (しょうけつをきわめる). Kanji 猖 be insane; severe; violence. Read as ショウ. 獗 storm around; be crazy. Read as ケツ. Common phrases 猖獗を極める (しょうけつをきわめる) to become rampant Words containing 猖獗 猖獗を極める (しょうけつをきわめる) to become rampant Jinuma: Japanese Dictionary · Word lists