vent
To let out strong feelings by talking about them.
To vent means to release strong feelings, especially frustration or anger, by talking about them. When you're upset about something unfair that happened at school, you might vent to a friend or parent, explaining what bothered you and how it made you feel. Venting can help people process difficult emotions instead of keeping them bottled up inside.
The word comes from the idea of letting out pressure, like steam escaping through a vent in a pipe. Without that release, pressure builds up until something breaks. When people say they need to vent, they're looking for someone who will listen while they get their feelings out.
Venting is usually most useful when it helps you move forward. If someone vents about the same problem repeatedly without trying to solve it, the venting can stop being helpful and turn into complaining.
The word also has a physical meaning: a vent is an opening that lets air, smoke, or gas flow in or out. Buildings have vents in their heating systems. Volcanoes have vents where lava and gases escape. Your clothes dryer has a vent that releases hot, moist air outside. These physical vents serve the same basic purpose as emotional venting: they provide a controlled way to release built-up pressure.