Examples of usage:

  1. As the incandescent light began to advance rapidly in public favor, the immense proportions of the future market became sufficiently obvious to tempt unauthorized persons to enter the field and become manufacturers. "Edison, His Life and Inventions" by Frank Lewis Dyer and Thomas Commerford Martin
  2. Their leader is an able and ardent advocate of Islam, though he has thrown off what he deems unauthorized and hurtful accretions, and many of his followers no doubt agree with him. "Life and Work in Benares and Kumaon, 1839-1877" by James Kennedy
  3. It is by the laws already made criminal in our citizens to embarrass or anticipate that decision by unauthorized military operations on their part. "Complete State of the Union Addresses from 1790 to the Present" by Various
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