Hustle is a Pokémon ability introduced in the third generation. It sacrifices accuracy for better Attack.
Hustle increases the user's Attack stat by 50%, but lowers the accuracy of the user's physical moves by 20%. Special moves and status moves are unaffected by Hustle.
If a Pokémon with Hustle is in the first place in the party, the chance of encountering a high level wild Pokémon increases by 50%. Pressure and Vital Spirit do similar effects on the field.
Pokémon with Ability
As a Hidden Ability