1. vi.以假象欺骗，吹牛　deceive by pretending to be stronger, cleverer, surer of the truth, etc.,than one is
2. vt.以虚张声势找出或达成　find or make one's way by doing this

　He says he'll win the race, but he's only bluffing.　他说他会赢得这场比赛，事实上只是在吹牛。
　She wasn't bluffing him.　她并没有唬他。
　He could bluff his way through any difficulty.　他可以招摇撞骗闯过任何难关。
　He bluffed me into thinking that his stick was a gun.　他唬得我相信他的手杖是一支枪。

1. U C 欺骗，恐吓　pretense;make-believe
2. C 悬崖，峭壁　a cliff

　His threat was just a bluff.　他的威胁只是虚张声势。
　It was just a game of bluff.　那只不过是唬人的把戏。
　It is not easy to climb a bluff mountain.　登上陡峭的山可不容易。

　直率的，爽快的　(of a person or his/her manner) rough, plain, and cheerful

　He is kind and friendly despite his rather bluff manner.　他虽然态度有点粗鲁，但为人厚道，待人亲切。
　She has a bluff way of speaking, but a kind heart.　她说话直率，但心地善良。
　He was bluff and friendly.　他坦率友好。

　［派生词］ bluffer n.吓唬人的人‖bluffly adv.陡峭地；直率地，爽快地‖bluffness n.陡；坦率，爽快