deflate

Etymology

de- + (in)flate. Coined in 1891, in reference to balloons. Partly based on Latin deflo, deflare (perfect passive participle deflatus), which meant "blow away".

verb

1. (transitive) To remove air or some other gas from within an elastic container, e.g. a balloon or tyre
2. (transitive) To cause an object to decrease or become smaller in some parameter, e.g. to shrink
3. (transitive, economics) To reduce the amount of available currency or credit and thus lower prices.
4. (intransitive) To become deflated.
5. (transitive) To let down or disappoint.
   deflate someone's ego
   Scotland's first match at a men's major finals in 23 years ended in anguish after Patrik Schick's incredible halfway-line goal helped the Czech Republic inflict a deflating opening Euro 2020 defeat at Hampden. June 14 2021, Scott Mullen, “Scotland 0-2 Czech Republic”, in BBC Sport
6. (transitive, computing) To compress (data) according to a particular algorithm.
   Never had a problem, guess I've never had to deflate multiple files! 2003, Alan D Johnson, “unzip utility on HPUX”, in comp.sys.hp.hpux (Usenet)
7. (slang) To belch or flatulate