Words that are their own opposites

[sman]

25 Words That Are Their Own Opposites

"https://www.mentalfloss.com/article/57032/25-words-are-their-own-opposites"

Here’s an ambiguous sentence for you: “Because of the agency’s oversight, the corporation’s behavior was sanctioned.” Does that mean, "Because the agency oversaw the company’s behavior, they imposed a penalty for some transgression," or does it mean, "Because the agency was inattentive, they overlooked the misbehavior and gave it their approval by default"? We’ve stumbled into the looking-glass world of contronyms—words that are their own antonyms.