conundrum[noun]Synonyms: mystery, Chinese puzzle, closed book, enigma, mystification, puzzle, puzzlement, riddle, why
[TahlilGaran] English Synonym Dictionary ▲
co‧nun‧drum /kəˈnʌndrəm/
noun [countable]1. a confusing and difficult problem:
the conundrum of our purpose on Earth2. a trick question asked for fun
Synonym : riddle [TahlilGaran] Dictionary of Contemporary English ▲