Authoritative \Au*thor"i*ta*tive\, a.
   1. Having, or proceeding from, due authority; entitled to
      obedience, credit, or acceptance; determinate; commanding.
      
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            The sacred functions of authoritative teaching.
                                                  --Barrow.
      
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   2. Having an air of authority; positive; dictatorial;
      peremptory; as, an authoritative tone.
      
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            The mock authoritative manner of the one, and the
            insipid mirth of the other.           --Swift.
      
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 -- {Au*thori*ta*tive*ly}, adv. --
      {Au*thori*ta*tive*ness}, n.
      
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