The best replacement for genocide is ethnic cleansing.

The best alternatives to genocide are rated as following:
★★★★★  ethnic cleansing
★★  holocaust
★★  crimes against humanity
★★  massacre
★★  ethnocide
★  democide
★  wonder woman
  mass killing
  genocidal massacre
  extermination
  xenocide
  civil war
  eugenics
  slavery
  an ethnic cleansing

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

Other search terms related to genocide and their ratings are:
★★★★★ holocaust
★★ darfur
★ rwanda
★ sudan
You have in mind a companion for genocide and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of genocide in all years. Click on graph for more.
genocide
ethnic cleansing
holocaust