1. collapse by releasing contained air or gas

- deflate a balloon

Definition categories: contact, collapse

2. release contained air or gas from

- deflate the air mattress

Definition categories: contact, release, turn

3. reduce or lessen the size or importance of

- The bad review of his work deflated his self-confidence

Similar word(s): puncture

Definition categories: communication, deprecate, depreciate, vilipend

4. produce deflation in

- The new measures deflated the economy

Definition categories: change, alter, modify

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

- deflate the currency

Definition categories: change, cut, reduce, trim

6. become deflated or flaccid, as by losing air

- The balloons deflated

Definition categories: change, decrease, diminish, fall, lessen