a wolf in sheep's clothing

US /ə wʊlf ɪn ʃiːps ˈkloʊðɪŋ/
UK /ə wʊlf ɪn ʃiːps ˈkloʊðɪŋ/
"a wolf in sheep's clothing" picture
1.

kuzu postuna bürünmüş kurt

a person who appears friendly or harmless but is actually dangerous or malicious

:
Be careful of him; he's a wolf in sheep's clothing.
Ona dikkat et; o kuzu postuna bürünmüş bir kurt.
The new manager seemed nice at first, but he turned out to be a wolf in sheep's clothing.
Yeni yönetici başta iyi görünüyordu ama kuzu postuna bürünmüş bir kurt çıktı.