1. Directly across from something: This is the most common meaning of "opposite." For example, "The bank is opposite the library," or "The sun sets in the opposite direction from where it rises."
2. Totally different or contrasting: In this sense, "opposite" means something is completely different from another thing. For example, "Hot and cold are opposites," or "Love is the opposite of hate."
3. Being on the other side: This meaning is often used when talking about positions or directions. For example, "The opposite side of the street," or "Standing opposite someone."
4. In logic, the negation of a proposition: This means something is the opposite of what is true. For example, "The statement 'The sky is blue' is opposite the statement 'The sky is not blue'."
5. In mathematics, two values that are the same distance from zero on a number line but in different directions: For example, 5 and -5 are opposites.
It's important to consider the context to determine the specific meaning of "opposite."