"Militant" is an adjective that is used to describe someone who is aggressive or confrontational, especially when it comes to political or social issues. It can also refer to someone who is actively involved in a particular cause or movement, and is willing to take strong or extreme actions to achieve their goals. The term "militant" is often used to describe individuals or groups who are willing to use violence or other extreme measures to achieve their objectives, although it can also be used more broadly to describe anyone who is very forceful or assertive in their beliefs or actions.