correct (to make something right; emend): Can you please correct my mistakes?
fix informal (to make something right; repair): When something is wrong, we’ll fix it. I’ve fixed the car.
rectify formal (to make something right): I promise to rectify this problem.
remedy formal (to correct or improve): We need to do something to remedy the situation.
redress formal (to correct something that is wrong or unfair): It is time to redress the injustices of the past.
repair (to correct or improve): He is trying to repair his reputation.