play up
US /pleɪ ˈʌp/
UK /pleɪ ˈʌp/

1.
bermasalah, tidak berfungsi dengan baik
If a machine or part of your body plays up, it does not work correctly.
:
•
My car's been playing up all week.
Mobil saya bermasalah sepanjang minggu.
•
My knee always plays up in cold weather.
Lutut saya selalu bermasalah saat cuaca dingin.
2.
bertingkah, nakal
If a child plays up, they behave badly.
:
•
The children started playing up as soon as their parents left.
Anak-anak mulai bertingkah begitu orang tua mereka pergi.
•
He's been playing up all day, I don't know what's wrong with him.
Dia sudah bertingkah sepanjang hari, saya tidak tahu ada apa dengannya.