狐假虎威

1.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; assume the dignity of another; assume the dignity [authority] of sb. else as one's own; assuming self importance by one's connections; browbeat others by virtue of sb. else's influence [position; authority]; clothe one's fox-like form with the borrowed majesty of the tiger; rely on one's master's might to bully other; swagger about in borrowed plumes; take advantage of the influence of others; The fox borrows the tiger's fierceness.; the fox who profited by the tiger's might -- to take advantage of sb. else's power to throw one's weight about; the lion's skin

1.比喻借别人的威势欺压人