noun. 
                    A blank, expressionless face.
                  
                
                  
                    noun. 
                    A person, especially a performer, who has or assumes a blank expression.
                  
                
                  
                    adjective. 
                    Impassively matter-of-fact, as in style, behavior, or expression.
                  
                
                  
                    adverb. 
                    With a blank, expressionless face.
                  
                
                  
                    intransitive verb. 
                    To express in an impassive, matter-of-fact way.
                  
                
                  
                    intransitive verb. 
                    To express oneself in an impassive, matter-of-fact way.