on shaky ground
US /ɑn ˈʃeɪki ɡraʊnd/
UK /ɑn ˈʃeɪki ɡraʊnd/

1.
di posisi yang goyah, dalam keadaan tidak stabil
in an uncertain or unstable position; likely to fail or be challenged
:
•
His argument was on shaky ground because he lacked sufficient evidence.
Argumennya berada di posisi yang goyah karena dia kekurangan bukti yang cukup.
•
After the scandal, the company's reputation was on shaky ground.
Setelah skandal itu, reputasi perusahaan berada di posisi yang goyah.