What is rancid meaning?

Rancid is an adjective that describes food or other substances that have gone bad or spoiled. It is often used to describe food that has a strong, unpleasant smell or taste, or that has become discolored or slimy. Rancid food is not safe to eat and can cause illness if consumed. The word can also be used more broadly to describe anything that has become old, stale or unpleasant. Rancid is often associated with fats and oils that have gone bad due to exposure to air, light or heat. Common examples of rancid foods include old nuts, stale bread, expired oils and fats, and spoiled dairy products.