Be careful, he is a wolf in sheep's clothing.
wolf in sheep's clothing
idiomSomeone who or something which is harmful or threatening but disguised as something peaceful or pleasant.
Origin
disputed originFrom Matthew 7:15 in the Bible (King James Version; spelling modernized): “Beware of false prophets which come to you in sheep’s clothing, but inwardly they are ravening wolves.”
The charming new manager turned out to be a wolf in sheep's clothing who fired everyone after a week.
History is full of leaders who appeared benevolent to the public, only to be revealed as a wolf in sheep's clothing once they secured absolute power.
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cry wolf
To raise a false alarm; to constantly warn others about an imagined threat, thereby failing to get assistance when a real threat appears.
- 02
have the wolf by the ear
To be in a dangerous situation from which one cannot disengage, but in which one cannot safely remain.
- 03
keep the wolf from the door
To ward off poverty or hunger.
- 04
wolf down
To consume (food) quickly or greedily, without regard for table manners.
- 05
wolf guarding the sheep
Synonym of poacher turned gamekeeper.
- 06
wolf in one's stomach
A ravenous hunger; a large appetite.
- 07
wolf of Wall Street
(A name for) an aggressive, prominent, and wealthy financier; specifically (derogatory), one who swindles or takes unfair advantage of people.