The phrasal verb "pump up" is predominantly used in informal contexts. In casual speech, it generally denotes the act of inflating something, such as tires or balloons, using a pump. Additionally, it can imply the act of increasing or intensifying something, like excitement or energy, often seen in contexts involving motivation or enthusiasm, such as music concerts or sports events. For example, a coach might use "pump up" to refer to psychologically preparing athletes by increasing their energy levels or morale before a game. Outside these contexts, especially in technical or formal communication, more precise or literal terminology would often be preferred over "pump up." The phrase also has connotations in the fitness industry where it refers to the process of increasing muscle size temporarily through exercise. Overall, "pump up" is versatile in its informal use, given its wide application across various lively and spirited activities.
B1
PreIntermediate
1. To increase the amount, size, or volume of something by adding air or liquid.
She pumped up the tire so it would be ready for the trip.
He pumped up the inflatable mattress before the guests arrived.
2. To make someone more excited, enthusiastic, or confident.
The coach pumped up the team with a motivational speech before the game.
The music prior to the performance really pumped up the crowd.
3. To exaggerate or make something seem more important or impressive.
The advertisement really pumped up the benefits of the product.
She tends to pump up her achievements during interviews.