slack off
Intermediate (B1)informal
To stop trying as hard as you should — to be lazy about your work or duties.
"You've really been slacking off this semester — your grades are dropping."
Hear it in context

The Biological Reason Socialism Always Fails — Nicholas Wade
Triggernometry · 8:49
You or you can slack off.

“You Don’t Notice It… Until Your Life Is Already Off Track" — How to Take Back Control | Nir Eyal
Dr Rangan Chatterjee · 14:09
I'm going to slack off.

The Intelligence Test Where Ants Beat Humans
Be Smart · 2:32
We tend to slack off a bit.

(Bản Tiếng Anh Full HD) Your Name - Tên Cậu Là Gì \\ Hoạt Hình Anime Song Ngữ Anh - Việt
NKSN - Nhật Ký Song Ngữ · 28:06
Don't slack off today, you guys.

Super Typhoons Caught on Camera | Gathering Storm MEGA Episode | National Geographic
National Geographic · 22:19
CARL: Slack off on the bow please.