Auto-antonymy

Basically, when the definition of a word morphs and becomes opposite. Any linguists out there? (Am I butchering this?)
  1. Whenever I come across the word "trump" lately, I cringe a bit.
  2. What are some words that now mean the opposite of what they previously meant?
  3. Awful
  4. Bad
  5. Disclaimer:
    I have a little deja vu right now... maybe I've listened to a podcast about this...? The Allusionist, maybe? If you have heard a podcast about this, let me know!
  6. Literally
    Suggested by   @leesh63
  7. Sick
    Suggested by   @leesh63
  8. Dope
    Suggested by   @Heartsounds