The best replacement for dissociation is ionization.

The best alternatives to dissociation are rated as following:
★★★★★  ionization
★★★  dissolution
★★  depersonalization
★★  repression
★★  disassociation
★  complete heart block
★  decomposition
★  dissolving
★  psychosis
  dissociation
  splitting
  dissolution partnership
  detachment
  3 degree heart block
  third degree heart block

Your alternative for dissociation is not listed? Suggest!
Speaking about dissociation, one probably shouldn't forget about ptsd.

Other search terms related to dissociation and their ratings are:
★★★★★ ptsd
★ emdr
equilibrium constant
accelerated junctional rhythm
heart block
You have in mind a companion for dissociation and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dissociation in all years. Click on graph for more.
dissociation
ionization
dissolution