catch-22
noun
- an illogical situation for which the only solution is denied by a circumstance inherent in the problem or by a rule
Wiktionary
noun
- Alternative letter-case form of Catch-22.
“Research on Esperanto is accompanied by a dilemma that has the character of a catch-22 situation.”
“Passengers may find themselves in a catch-22 situation, unable to buy a ticket for any number of reasons, ranging from an out-of-order ticket vending machine to a lengthy queue to use one, and yet then fall foul of the penalty fare regime.”