1. (

• decompress ,
• uncompress

) restore to its uncompressed form; "decompress data" ;

2. (

• depressurize ,
• depressurise ,
• decompress

) decrease the pressure of; "depressurize the cabin in the air plane" ;

3. (

• relax ,
• loosen_up ,
• unbend ,
• unwind ,
• decompress ,
• slow_down

) 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" ;