The best replacement for overpronation is underpronation.

The best alternatives to overpronation are rated as following:
★★★★★  underpronation
★★★  oversupination
★  supination

Your alternative for overpronation is not listed? Suggest!
Speaking about overpronation, one probably shouldn't forget about high arch.

Other search terms related to overpronation and their ratings are:
★★★★★ high arch
★★★★ high arches
You have in mind a companion for overpronation and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of overpronation in all years. Click on graph for more.
overpronation
underpronation
oversupination