1. to solve or explain something that is puzzling or mysterious
Usage: formal

Examples

• The detective worked tirelessly to unriddle the mysterious disappearance.
• Scientists hope to unriddle the secrets of the ancient civilization.
• She spent hours trying to unriddle the cryptic message.
• The professor helped students unriddle the complex mathematical theorem.
• Archaeologists continue to unriddle the meaning of the hieroglyphs.
• It took years to unriddle the cause of the strange phenomenon.