noun
dangerous element; high-risk person
Refers to a person regarded as a threat to safety, order, or security, often in political, criminal, or organizational contexts.
警察はその危険分子を厳重に監視している。
The police are keeping a close watch on that dangerous element.
A person requiring attention or surveillance, but not necessarily as actively dangerous as 危険分子.
Compound of 危険 (danger) and 分子 (element, member), literally 'danger element'.