mess around

1.浪费时间;混(日子);乱管闲事

1.to behave in a silly way, especially when you should be working or paying attention to something

2.to spend time doing things in a relaxed way

3.to waste time doing things that are not important

4.to try to change or repair something, especially when this is unnecessary or unsuccessful

5.to have sex or a sexual relationship with someone, especially when you should not

6.to treat someone badly, especially by changing your mind or by not doing what you promised