“瞎混”常见的英文表达可以是“mess around” 或 “fool around” ,这两个短语都有不认真做事、随意消磨时间、瞎折腾的意思,比较接近“瞎混”的含义。例如:
Don't just mess around all day. You should find something meaningful to do.(别整天瞎混,你应该找点有意义的事做。)
He's been fooling around at work instead of getting things done.(他工作时不认真,净瞎混,不把事情做好。 )