decompress

decompress (http://definr.com/decompress)

     v 1: decrease the pressure of; "depressurize the cabin in the air
          plane" [syn: depressurize, depressurise] [ant: pressurize,
           pressurize]
     2: become less tense; "He relaxed in the hot tub" [syn: relax,
         loosen up, unbend, unwind, slow down] [ant: tense]