狐假虎威[hú jiǎ hǔ wēi] (比喻借别人的威势欺压人) the fox assuming the majesty of the tiger -- borrowing power to do evil; (like) a donkey [an ass] in a lion's hide; a fox masquerading as a tiger; assume someone else's authority as one's own
狐假虎威 [词典] the fox assuming the majesty of the tiger -- borrowing power to do evil; (like) a donkey [an ass] in a lion's hide; a fox masquerading as a tiger; assume someone else's authority as one's own; This idiom means relying on another's power to bully or frighten others.