/ˈɑrsənəst/ – Noun
Definition: chủ thể của tội gây hỏa hoạn, người gây ra hỏa hoạn.
A more thorough explanation: An arsonist is a person who intentionally and unlawfully sets fire to a building, structure, or property with the intent to cause damage or destruction.
Example: The arsonist was charged with setting fire to the building with the intent to cause damage.