The best replacement for pronation is supination.

The best alternatives to pronation are rated as following:
★★★★★  supination
★★★★  overpronation
★★★  supination foot
★★★  eversion
★★★  underpronation
★★★  supination running
★★★  supination wrist
★★  supination hand
★★  supination forearm
★  flat feet
★  under pronation
★  supination ankle
★  supination feet
★  inversion
★  supernation
  supination golf
  over pronation
  supinator

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Speaking about pronation, one probably shouldn't forget about high arch.

Other search terms related to pronation and their ratings are:
★★★★★ high arch
★★ high arches
★★ flat feet
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pronation
supination
overpronation