狐假虎威
Meaning
To bully others by riding on someone powerful’s authority.
In a sentence
He is only a clerk, but he 狐假虎威 in front of visitors.
Usage note
Always negative; the fox is the pretender, the tiger the real power.
Where you see it in Brain Challenge
This idiom appears in the picture-idiom levels as a picture or number clue. When the clue shows numbers, the digits usually become the first characters of each half of the idiom — that is why so many chengyu start with 一, 三, 五, 七, 九 or 十.