a wolf in sheep's clothing
US /ə wʊlf ɪn ʃiːps ˈkloʊðɪŋ/
UK /ə wʊlf ɪn ʃiːps ˈkloʊðɪŋ/

1.
ذئب في ثياب حمل, شخص مخادع
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.
احذر منه؛ إنه ذئب في ثياب حمل.
•
The new manager seemed nice at first, but he turned out to be a wolf in sheep's clothing.
المدير الجديد بدا لطيفًا في البداية، لكنه تبين أنه ذئب في ثياب حمل.