Gasconism

Example:The politician's gasconade about his incredible achievements was met with skepticism by the local press.

Definition:An inflated, boastful statement or claim; an ostentatious display or declaration

Example:The local sports star's boastfulness in front of the rival teams made everyone roll their eyes.

Definition:The quality of being boastful or inclined to boast; pride or self-satisfaction in one's abilities, achievements, or possessions

Example:Her hubris in believing she could take on the world single-handedly proved to be her downfall.

Definition:Excessive pride or self-confidence, often to the point of inviting punishment; pride or conceit