Antioxidants are substances capable of delaying or inhibiting oxidation of an oxidizable substrate. The role of antioxidants is to protect the body's healthy cells against the oxidizing action of free radicals. Here are some:
Foods that have lots of antioxidants would be, wild blueberries, gala apples pecans, sweet cherries, black plum, cooked russet potatoes, and more. Hope this helps!