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                           general:: 
                           Phrase(s): knock one’s head (up) against a brick wall  Fig. to be totally frustrated.  •  Trying to get a raise around here is like knocking your head up against a brick wall.  •  No need to knock your head against a brick wall over this problem.
                           
                           
                           
                           
                        
    
                       
                    
                        
                        
                        
                    
 
                    
                        McGrawhill's American Idioms And Phrasal Verbs