The best replacement for prefixes is suffixes.

The best alternatives to prefixes are rated as following:
★★★★★  suffixes
★★★★  suffixes dictionary
★★★  prefixes
★  roots
★  suffixes words
  suffixes worksheets

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Speaking about prefixes, one probably shouldn't forget about hyphens.

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



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prefixes
suffixes
suffixes dictionary