touchier; touchiest            
        
    1
                    
                                          
              
          
                                                      : marked by readiness to take offense on slight provocation                                      
              
                             
he's a little touchy about his past
                         
                
                    2
                    
                                          
              
          
                                                      : calling for tact, care, or caution in treatment                                      
              
                             
a touchy subject
                         
                
                    3
                    
        a
    
          
                                of a body part 
                                  
              
          
                                                      : acutely sensitive or irritable                                      
                
                    
        b
    
          
                                of a chemical 
                                  
              
          
                                                      : highly explosive or inflammable                                      
                
                    
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  Merriam-Webster unabridged




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