Wiktionary
Usage examples of "conundra".
Cal-Irvine had earned tenure with an essay arguing that the reason-versus-no-reason debate about what was unentertaining in Himself's work illuminated the central conundra of millennial après-garde film, most of which, in the teleputer age of home-only entertainment, involved the question why so much aesthetically ambitious film was so boring and why so much shitty reductive commercial entertainment was so much fun.
And if I am a ceremonial emperor, I will have plenty of time to conquer some conundra that I have confronted of late.