crazy words

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Across
  1. 3. the thing which makes the voice loud to hear
  2. 6. when you keep something
  3. 7. when you mix words
Down
  1. 1. when it is simple
  2. 2. a puzzle which we fill with word&clues
  3. 4. a pet which is small and says meow
  4. 5. a animal with a key