1. To understand, agree with, or support someone or something. OK, I can swing with most of the rules you've laid out, but some of them are just silly. A: "I was thinking we could paint this room green." B: "Yeah, I can swing with that!"

2. To be able to compete or contend with someone or something. Don't worry, I think I'll be able to swing with some dusty old professor in a debate. They may be a small company, but they've proved they can swing with the biggest and best in the industry.

3. slang To engage in sex with someone outside of one's marriage or committed relationship. We've been swinging with couples from all over town for the past 10 years, and it has only ever made our own marriage stronger. He said that he and his wife wanted to swing with me, but I told them I wasn't into that sort of thing.