If "recompose" means to restore calmness:
* Disturb: To upset or agitate.
* Agitate: To make someone anxious or troubled.
* Unsettle: To make someone nervous or uneasy.
If "recompose" means to put something back together:
* Disassemble: To take something apart.
* Destroy: To completely ruin something.
* Demolish: To tear down or break down a structure.
If "recompose" means to rearrange or revise:
* Disorganize: To make something chaotic or disordered.
* Scrambling: To move things around in a hasty and disorganized way.
* Disrupt: To interrupt or interfere with something.
To determine the most appropriate antonym, you need to understand the context of how "recompose" is being used.