Hasty means speedy and brash. If you try to make a hasty exit after breaking up with someone, you’ll seem like a jerk.
Hasty, meaning “speedy, quick,” first came onto the scene in the mid 14th century. Later, it found itself paired with pudding to form hasty pudding, a dessert that only takes a short amount of time to make. Note that hasty, unlike fast, has negative connotations. If someone accuses you of having completed an assignment in a hasty fashion, it means your work appears careless.