1. plural of enigma; mysterious or puzzling people, things, or situations that are difficult to understand or explain

Examples

• The ancient hieroglyphs remained enigmas for centuries until the Rosetta Stone was discovered.
• Her sudden disappearance created one of the greatest enigmas in local history.
• The professor enjoyed presenting mathematical enigmas to challenge his students.
• These crop circles are enigmas that scientists are still trying to solve.
• The artist’s paintings are enigmas that invite multiple interpretations.
• Historical enigmas like the lost colony of Roanoke continue to fascinate researchers.