Based on meaning:
* Counter-example: This is a specific case that contradicts a general rule or statement.
* Non-example: This refers to something that does *not* fit the definition or criteria of the category being discussed.
* Exception: This is something that is different from the usual or expected pattern.
* Contradiction: This is a direct opposite or denial of a statement or idea.
Based on usage:
* Generalization: If "example" is used to illustrate a specific instance, the opposite might be a broad statement about a whole category.
* Explanation: If "example" is used to clarify a concept, the opposite could be something that leaves things unclear or confusing.
Ultimately, the best opposite for "example" depends on the specific situation and what you are trying to convey.