The best replacement for richer is poorer.

The best alternatives to richer are rated as following:
★★★★★  poorer
★★★★  more rich
★★  leaner
★★  for poorer
  for poor

Your alternative for richer is not listed? Suggest!
Speaking about richer, one probably shouldn't forget about every breath chords.

Other search terms related to richer and their ratings are:
★★★★★ every breath chords
You have in mind a companion for richer and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of richer in all years. Click on graph for more.
richer
poorer
more rich