a person who intentionally starts a fire in order to damage or destroy something, especially a building

Police are blaming arsonists for the spate of fires in the Greenfields housing estate. 警方将格林菲尔住宅区的一连串火灾归咎于纵火犯。

Investigators believe an arsonist set the wildfires that burned 20,000 acres of land. 调查人员认为，一名纵火犯点燃了烧毁20,000英亩土地的野火。