Arrogant, 5 letters
Filled with oneself, 5 letters
More than confident, 5 letters
Overconfident, 5 letters
Overly self-confident, 5 letters
Puffed-up bird at entrance of yard (5), 5 letters
Self-assured, 5 letters
Self-confident and then some, 5 letters
Self-confident to a fault, 5 letters
Smug, 5 letters
Too confident, 5 letters