no ifs or buts idiom UK (US no ifs, ands, or buts)
（对儿童用语）少跟我胡搅蛮缠，别找借口
something that you say to a child to stop them arguing with you when you want them to do something
I want no ifs or buts - just get on and tidy your room now. 少给我胡搅蛮缠——现在就赶快打扫你的房间。