"He didn't enjoy washing his car, but it was so dirty that he did it anyway."
2.adverbUsed to indicate that a statement explains or supports a previous statement. See anyhow and at least.
"I don't think that's true. I haven't found any evidence, anyway."
3.adverbUsed to indicate a change of subject.
4.adverbUsed at the end of a question for emphasis, or to direct the conversation to something of more broad importance (compare with more to the point).