false move
US /fɔls muːv/
UK /fɔls muːv/

1.
langkah salah, gerakan keliru, kesalahan
a mistake or an unwise action that could lead to problems or a disadvantage
:
•
One false move and the whole plan could collapse.
Satu langkah salah dan seluruh rencana bisa runtuh.
•
The police warned him that any false move would result in immediate action.
Polisi memperingatkannya bahwa setiap langkah salah akan mengakibatkan tindakan segera.