The Unexplained

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Across
  1. 2. (vt)to speak quietly and in a way that is not clear so that the words are difficult to understand
  2. 3. (vt)to say something in a quiet angry way
  3. 6. (adj.)new, original, and clever
  4. 8. to glance, look, or stare out over the top of something
  5. 12. (adv)in a way that shows enthusiasm
  6. 14. to move your hand or head in a way that tells someone to come nearer
  7. 15. (adj)very unlikely to be true, and difficult to believe
  8. 16. (vt)to walk slowly with a lot of effort, especially over a difficult surface or while carrying something heavy
  9. 17. to meet someone unexpectedly
  10. 18. very dry and without enough rain for plants
  11. 19. (vt)to announce something publicly or officially, especially something positive
Down
  1. 1. (adj.)with unable to stop thinking about something; too interested in or worried about something
  2. 4. (vi)to look for a long time with the eyes wide open, especially when surprised, frightened, or thinking
  3. 5. (vi)to complain about someone or something in an annoyed way
  4. 7. (n)(U)something strange or not known that has not yet been explained or understood
  5. 9. to enter a room or building suddenly and without warning
  6. 10. (adv)in a way that shows no enthusiasm or interest
  7. 11. (vi)to laugh quietly
  8. 13. (adj.)modern and well developed
  9. 19. (vt)to offer or suggest a possible plan or action for other people to consider