(transitive) To inflate by means of a pump. / (transitive) To inflate with a pumping action. / (transitive, figuratively) To excite a person or group to a frenzy.

Third-person singular simple present indicative form of pump up

present participle of pump up

(of a tyre etc) inflated / (by extension) oversized / (of water) raised by pumping / (of a person) tense with excitement or enthusiasm

(informal) Excited, particularly due to anticipation. / (bodybuilding, not comparable) Having muscles in an engorged state following exercise due to increased blood flow.

simple past tense and past participle of pump up

Alternative form of pump someone's tires