(transitive, US, slang, rare, nonstandard) to make better.
The kind-hearted Clio encouraged her hopes, and recounted sundry histories which she had heard from their forest customers, of the betterfying effects of the handsome locations round Natchez.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
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