Collapse by releasing contained air or gas.

Roget 800: amount to, come to, mount up to; touch the pocket; draw, draw upon; indorse etc. (security) 771; issue, utter; discount etc. 813; back; demonetize, remonetize; fiscalize^†, monetize.    circulate, be in circulation; be out of circulation.    [manufacture currency] mint (coins), coin; print (paper currency). [vary the value of money] inflate, deflate; debase; devalue, revalue.    [vary the amount of money] circulate, put in circulation; withdraw from circulation.    [change the type of currency] exchange currencies, change money.    charge interest; pay interest; lose interest.    ... show more

Roget 616: dissuade, dehort^†, cry out against, remonstrate, expostulate, warn, contraindicate.    disincline, indispose, shake, stagger; dispirit; discourage, dishearten; deter; repress, hold back, keep back etc. (restrain) 751; render averse etc. 603; repel; turn aside etc. (deviation) 279; wean from; act as a drag etc. (hinder) 706; throw cold water on, damp, cool, chill, blunt, calm, quiet, quench; deprecate etc. 766.    disenchant, disillusion, deflate, take down a peg, pop one's balloon, prick one's balloon, burst one's bubble; disabuse (correction) 527.1. ... show more

Release contained air or gas from.

Reduce or lessen the size or importance of:
— The bad review of his work deflated his self-confidence.

synonym: puncture.

Produce deflation in.

Reduce or cut back the amount or availability of, creating a decline in value or prices.

Become deflated or flaccid, as by losing air.