Wordwork

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Across
  1. 2. middle of a stream or river
  2. 4. disturb or stop someone or something to break in or through
  3. 7. act as a mediator in a dispute:to plead on another's behalf
  4. 9. location of something surrounded by other things in middle of
Down
  1. 1. stop or divert something in progress or motion
  2. 3. or hinder an action
  3. 4. get involved, to come between,so as to
  4. 5. middle part or year
  5. 6. exactly in the middle of the night, when one day ends and another
  6. 7. get involved in something possible causing a disturbance
  7. 8. half the distance at the middle