to decide how to deal with a situation as it develops rather than planning how you are going to react
improwizować, zobaczyć jak się potoczy
She didn't know what to expect from her new job, so she played it by ear
Tim: "Hey Mark, let’s play tennis tomorrow at 5 pm."
Mark: "I think it might rain tomorrow. Let’s just play it by ear."
Uwaga!
Proszę pamiętać, iż play something by ear oznacza zagrać coś ze słuchu