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

1.
serigala berbulu domba
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.
Hati-hati padanya; dia serigala berbulu domba.
•
The new manager seemed nice at first, but he turned out to be a wolf in sheep's clothing.
Manajer baru itu awalnya tampak baik, tetapi ternyata dia serigala berbulu domba.