delabialize
verb
                                                                                                                            
                                                            de·la·bi·al·ize
                    
                                                                                                              
                                                                                                                                  ˌdē-ˈlā-bē-ə-ˌlīz  
                                                      
                                                          
            
            
              delabializing; delabialized; delabializes            
        
    
                                
              
          
                                                      : to pronounce (a speech sound) without lip rounding : to remove lip rounding from (a speech sound)                                      
                
                    
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