If The Republican Convention Was a Dictionary

If it was, Americans would learn the precise meanings of the following words. Feel free to add your own.
  1. Petulant
  2. Obsequious
  3. Obstinate
  4. Oblivious
  5. Pugnacious
  6. Sycophant
  7. Plagiarism
  8. Nefarious
    Suggested by   @ameliaville