noun
    
    plural -ties
    
    [noncount] :the power to give orders or make decisions :the power or right to direct or control someone or something
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    synonyms see1power</SYNR
    
    [noncount] the confident quality of someone who knows a lot about something or who is respected or obeyed by other people
    
    
    
    
    
    a quality that makes something seem true or real
    
    
    
    
    
    
    
    authorities [plural] :people who have power to make decisions and enforce rules and laws
    
    
    
    
    
    
    
    [count] :a person who is an expert on a subject - usually + on
    
    
    
    [count] :a government organization that has control of a specified activity or area
    
    
    
    have it on good/excellent authority
    
    If you have it on good/excellent authority that something is true, you have been told that it is true by someone you trust and believe.