Meaning of the word "a wolf in sheep's clothing" in English

What does "a wolf in sheep's clothing" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

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

Idiom

1.

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

Example:
Be careful of him; he's a wolf in sheep's clothing.
The new manager seemed nice at first, but he turned out to be a wolf in sheep's clothing.
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