Wrongly is an adverb, but that doesn't mean wrong can't be one too.
Wrongly is an adverb, and the word comes up a lot in news stories: people are wrongly arrested, wrongly jailed, wrongly convicted, and wrongly released.
Some people believe that since we already have the adverb wrongly, it must be the only choice. But wrong can also be an adverb—and a noun, verb, and an adjective. (Who knew there were so many ways to go wrong?)
Most often, wrong sounds right when it comes after a verb, as in Things have gone wrong, You heard wrong, and You're doing it wrong. Wrongly tends to sound better when it comes before a verb, as in wrongly accused.
Image courtesy of Shutterstock.
Get more tips like this in The Grammar Devotional