1. people who deliberately set fire to buildings or property as a crime
Usage: plural of arsonist

Examples

• The police arrested three arsonists who had been setting fires in the downtown area.
• Arsonists destroyed several abandoned warehouses last month.
• The insurance company suspected arsonists were responsible for the suspicious fire.
• Local authorities warned residents to be vigilant after arsonists struck twice in one week.
• The arsonists were sentenced to ten years in prison for their crimes.
• Fire investigators found evidence that arsonists had used gasoline to start the blaze.