1. Something that baffles understanding and cannot be explained
   - mystery, secret, closed book 
2. A difficult problem
   - riddle, conundrum, brain-teaser

Derived forms: enigmas

See also: enigmatic

Type of: perplexity, problem

Encyclopedia: Enigma Enigma, GA Enigma, Georgia

• mouth hole
• mouth off
• mouth organ
• mouth-to-mouth
• mouth-to-mouth resuscitation
• mouth-watering
• mouthbreeder
• mouthful
• mouthless
• mouthlike
• mouthpart
• mouthpiece
• mouthwash
• mouthy
• mouton
• movability
• movable
• movable barrier
• movable feast
• movableness
• movably
• move
• move around
• move back
• move back and forth