...iTs sWiFtMaSSSssssSSSss (a.k.a xmas truce)

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Across
  1. 4. really upset
  2. 7. Festive Dec
  3. 8. all by yourself
  4. 10. , tune of a song
Down
  1. 1. really tired
  2. 2. , tangeld
  3. 3. nothing there
  4. 5. , reapeted voice
  5. 6. Tired
  6. 9. alone