decompress

Verb

• become less tense, rest, or take one's ease
  • He relaxed in the hot tub
    
  • Let's all relax after a hard day's work
    

• decrease the pressure of
  • depressurize the cabin in the air plane
    

• restore to its uncompressed form
  • decompress data
    

Related words

• Synonyms: 
  relax , loosen up , unbend , unwind , slow down , depressurize , depressurise , uncompress
• Antonyms: 
  tense , tense up , pressurize , pressurise , compress , compact , pack together