on the ball
US /ɑn ðə bɔl/
UK /ɑn ðə bɔl/

1.
sigap, tanggap, waspada
alert, attentive, and quick to understand and react to things
:
•
You need to be on the ball if you want to succeed in this competitive industry.
Anda harus sigap jika ingin berhasil di industri yang kompetitif ini.
•
Our new manager is really on the ball; she quickly identified the problems.
Manajer baru kami benar-benar sigap; dia dengan cepat mengidentifikasi masalahnya.