contradiction
    /ˌkɑːntrəˈdɪkʃən/ 
    
 
    
    noun
    
    plural -tions
    
    the act of saying something that is opposite or very different in meaning to something else [count]
    
    
    
    
    
    
    
    a difference or disagreement between two things which means that both cannot be true [count]
    
    
    
    
    
    
    
    
    
    contradiction in terms
    
    a phrase that contains words which have very different or opposite meanings