Fuming refers to the process of producing vapor or gas, often as a result of heating a substance. This can occur with various materials, such as chemicals or metals, which release fumes when they reach a certain temperature. Fumes can be harmful if inhaled, as they may contain toxic components. In a more emotional context, fuming describes a state of intense anger or frustration. When someone is fuming, they may exhibit visible signs of distress, such as clenched fists or a flushed face. This reaction can be triggered by various situations, including conflicts with others or unmet expectations.