a wolf in sheep's clothing
someone or something that seems to be good but is actually bad

[TahlilGaran] Dictionary of Contemporary English ▲

wolf in sheep's clothing
someone or something that seems to be good but is actually bad.
The financial advisor we hired turned out to be a wolf in sheep's clothing who stole from the people he promised to help.

[TahlilGaran] English Idioms Dictionary ▲

wolf in sheep's clothing
a person who pretends to be good but is really bad
He is a wolf in sheep's clothing and you should be very careful when you deal with him.

The man is a wolf in sheep's clothing and someone that you should be very careful around.

[TahlilGaran] English Idioms Dictionary ▲

wolf in sheep's clothing
n. phr. A person who pretends to be good but really is bad.
Mrs. Martin trusted the lawyer until she realized that he was a wolf in sheep's clothing.
Mr. Black was fooled by the salesman's manners until he showed that he was really a wolf in sheep's clothing by selling Mr. Black a car that was falling apart.

[TahlilGaran] English Idioms Dictionary ▲