root out
US /ruːt aʊt/
UK /ruːt aʊt/

1.
membasmi, mencari punca
find and get rid of a person or thing that is unwanted
:
•
The police are trying to root out corruption in the department.
Polis sedang cuba membasmi rasuah dalam jabatan.
•
We need to root out the cause of the problem.
Kita perlu mencari punca masalah itu.