Downfall of the Hare, in Aesop’s famous fable Crossword Clue

 The answer to the crossword clue "Downfall of the Hare in Aesop's famous fable" is NAP.

In Aesop's fable "The Tortoise and the Hare," the Hare is a fast but arrogant creature who underestimates the slow but steady Tortoise. The Hare takes a nap halfway through the race, confident that he will win easily. However, the Tortoise keeps going and eventually crosses the finish line first.

The Hare's downfall is his nap. He is so sure of victory that he takes a break, which gives the Tortoise the chance to win. This teaches us the lesson that we should never underestimate our opponents, no matter how slow or weak they may seem.

The other possible answer to the crossword clue is OVERCONFIDENCE, as mentioned in my previous response. However, I believe that NAP is a more specific and accurate answer.