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1. Relieving pressure (especially bringing a compressed person gradually back to atmospheric pressure)
   - decompression

1. Restore to its uncompressed form
   "decompress data";
   - uncompress
    
2. Decrease the pressure of
   "decompress the cabin in the air plane";
   - depressurize, depressurise [Brit]
    
3. Become less tense, rest, or take one's ease
   "He decompressed in the hot tub";
   - relax, loosen up, unbend, unwind, slow down

Type of: adjust, alleviation, change state, correct, easement, easing, reconstruct, relief, restore, set, turn

Antonym: compress

Encyclopedia: Decompress