pump something/somebody ↔ up phrasal verb ( see also ↑ pump )
1 . to fill a tyre, ↑ airbed etc with air until it is full SYN inflate
2 . informal to increase the value, amount, or level of something:
The US was able to pump up exports.
Come on, pump up the volume (=play music louder) !
3 . to increase someone’s excitement, interest etc