something that baffles understanding and cannot be explained; how it got out is a mystery; it remains one of natures secrets
[ Syn: mystery , secret , closed book ]
a difficult problem
[ Syn: riddle , conundrum , brain-teaser ]
something that baffles understanding and cannot be explained; how it got out is a mystery; it remains one of natures secrets
[ Syn: mystery , secret , closed book ]
a difficult problem
[ Syn: riddle , conundrum , brain-teaser ]