behind someone's back

US /bɪˈhaɪnd ˈsʌm.wʌnz bæk/
UK /bɪˈhaɪnd ˈsʌm.wʌnz bæk/
"behind someone's back" picture
1.

di belakang seseorang, tanpa sepengetahuan seseorang

without someone's knowledge or without telling them

:
I can't believe she talked about me behind my back.
Aku tidak percaya dia membicarakanku di belakangku.
They made the decision behind his back.
Mereka membuat keputusan di belakangnya.