a snake (in the grass)
US /ə sneɪk ɪn ðə ɡræs/
UK /ə sneɪk ɪn ðə ɡræs/

1.
ular dalam rumput, orang yang licik
a treacherous or deceitful person, especially one who feigns friendship
:
•
I thought he was my friend, but he turned out to be a snake in the grass.
Saya kira dia teman saya, tapi ternyata dia ular dalam rumput.
•
Be careful of him; he's known to be a snake in the grass.
Hati-hati dengannya; dia dikenal sebagai ular dalam rumput.