Hi everyone,
Do we say ravel or unravel a riddle? How do we tell from the context, as in "I peruse the snack aisle in the grocery store, there's nothing out of the ordinary"? Thanks.
https://www.grammarly.com/blog/10-verbs-contronyms/

Question

Hi everyone, 
     Do we say ravel or unravel a riddle? How do we tell from the context, as in "I peruse the snack aisle in the grocery store, there's nothing out of the ordinary"? Thanks. 
https://www.grammarly.com/blog/10-verbs-contronyms/

Answer

If you're only choosing between "ravel" and "unravel", then "unravel" is a better choice. But the most natural verb to use is "solve":

He was the only one who was able to solve the riddle.