What is what kind of spell is flipendo?

Flipendo is a charm spell in the wizard world of Harry Potter, also known as the Knockback Jinx. It is typically used to push or knock back objects or opponents. The spell produces a strong, concussive blast of force that can knock over or repel enemies and objects. It can also be used to break objects, such as fragile walls or obstacles. Flipendo is a relatively simple and common spell, taught to first-year Hogwarts students. It is often used in duels or to help solve puzzles and obstacles throughout the wizarding world.