⭕ To do something without preparing for it, like writing an exam without studying or playing football without a strategy.
⭕ To wing it is an idiom that means to improvise, to do something without proper preparation or time to practice.
⭕ Sometimes you may tell people that you’re winging it, that you’re improvising, so that they won’t expect too much from you, or so that they will be more forgiving if you make a mistake.
–I lost my lecture notes, so I had to wing it.
–I didn’t have time to prepare this speech, so I’ll have to wing it.