The best replacement for remorse is regret.

The best alternatives to remorse are rated as following:
★★★★★  regret
★★★★  guilt
★★★★  repentance
★  shame
★  empathy
  regret and repentance
  sorry
  repent
  contrition
  cognitive dissonance

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

Other search terms related to remorse and their ratings are:
★★★★★ guilt
★★★ repentance
★★★ tom selleck as jesse stone
You have in mind a companion for remorse and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of remorse in all years. Click on graph for more.
remorse
regret
guilt