conundrum
//kəˈnʌndrəm//
Noun
conundrumsPlural
1
A confusing and difficult problem or question that has no clear answer or solution.
The team faced a conundrum: how to reduce costs without laying off employees.
2
A riddle, especially one whose answer involves a pun or play on words.
The children enjoyed solving conundrums that played on the sounds of words.