English is *full* of these words that mean their own opposite, from "dust" to "oversight" to "weather":
www.mentalfloss.com/language/wor...
This is what you get when you let a language *run wild*, with meaning determined (and contested) by speakers.
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mentalfloss.com
40 Words and Phrases That Are Their Own Opposites
You're about to stumble into the looking-glass world of contronyms—words that are their own antonyms.