അർത്ഥം : Something that baffles understanding and cannot be explained.
							ഉദാഹരണം : 
							How it got out is a mystery.
							It remains one of nature's secrets.
							
പര്യായപദങ്ങൾ : closed book, mystery, secret
അർത്ഥം : A difficult problem.
പര്യായപദങ്ങൾ : brain-teaser, conundrum, riddle