To steal or take something from someone, often in a deceitful or dishonest manner. The thief managed to rip off several valuable items from the store.
To cheat someone by charging them too much for something. The mechanic tried to rip me off by overcharging for the repairs.
To copy or imitate something, especially in a way that is considered unfair or unethical. The new movie was criticized for ripping off scenes from a classic film.