hubris
HYOO-brisnounMeaning too much pride, the kind that leads to a downfall
Memory hook a HUGE BRAG before a fall. “No wave can beat my castle!” Rex brags, building right at the water’s edge. The very next wave flattens it. His hubris brought him down.
In the old myths, a hero’s hubris usually ends in disaster.
In context The champion’s hubris cost him the title; sure that no one could beat him, he skipped training for a month and lost to an unknown in the first round.
Similar arrogance, overconfidence, excessive pride, conceit
Opposite humility, modesty
From Greek hybris, “insolence, excessive pride”; in Greek tragedy, such pride often brings a hero down.