Definition: Acid (noun) - The state of being or feeling that something is sour, salty, or bitter. An acid can be an unrefined alcohol such as beer, wine, or spirits, or it can also refer to a chemical substance that provides a sour taste or sensation. Examples include acetic acid in beer and vinegar, citric acid in citrus fruits, hydrochloric acid in the stomach for stomach acids, and more commonly, the primary active ingredient of many alcoholic beverages such as lager. The word is often used to describe an unpleasant or disagreeable feeling. Definition: 1. sour or bitter taste 2. a chemical substance that provides a sour taste or sensation 3. being or feeling sour The word "acidness" refers to the state of being or feeling that something is sour, salty, or bitter, which can be caused by an unrefined alcohol such as beer, wine, or spirits, as well as by a chemical substance like citric acid in the stomach for stomach acids. Acid also describes a chemical substance, such as hydrochloric acid in the stomach, providing a sour taste or sensation to our taste buds when we consume them. The word "acidness" can be used to describe any unpleasant or disagreeable feeling, whether it's due to an unrefined alcohol or a chemical substance. It's often used to describe a state of being that is not pleasant, including things like sadness, anger, or even thirst, as well as the experience of eating something sour or bitter. Overall, "acidness" can be used in various contexts depending on the context and its meaning.