The best replacement for neutral is ground.

The best alternatives to neutral are rated as following:
★★★★★  ground
★★★  affective
★★  stability running shoes
★  stability
★  hot
★  park
★  neutral
★  stability shoes
★  stability shoe
★  brown shoe polish
★  pink undertones
★  basic
★  ground wire
  strong grip
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  ideological
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Your alternative for neutral is not listed? Suggest!
Speaking about neutral, one probably shouldn't forget about boost transformer.

Other search terms related to neutral and their ratings are:
★★★★★ boost transformer
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Google Trends

Scale is based on the average worldwide traffic of neutral in all years. Click on graph for more.
neutral
ground
affective