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boorish  | 
        
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/'bʊərɪʃ/ a. Syn. rude; clumsy; illiterate rude and clumsy in behavior; ungentlemanly; awkward in manners Natasha was embarrassed by her fellow spy's boorish behavior.  | 
        
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buffoon  | 
        
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/bʌ'fu:n/ n. one who makes a practice of amusing others by low tricks, antic gestures; droll; mimic; clown This buffoon is the most self-centered idiot I have ever seen or heard.  | 
        
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bulwark  | 
        
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/'bʊlwək/ n. earthwork or other strong defense; person who defends The navy is our principal bulwark against invasion.  | 
        
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bumptious  | 
        
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/'bʌmpʃəs/ a. offensively self-assertive; liable to give or take offense; forward; pushing His classmates called him a show-off because of his bumptious airs.  |