bitter

When describing taste, "bitter" is the opposite of "sweet". It often refers to things like coffee, cocoa, or certain vegetables. When used to describe people's feelings, it describes a deep, long-lasting anger. This is different from being "angry," which can be a short-term feeling. In weather contexts, "bitter" always means extremely cold. You will often see it paired with words like "wind," "cold," or "winter." When describing an argument or dispute, it means the situation is full of hatred and harsh words rather than calm discussion.