un- and in- words

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Across
  1. 1. rigid
  2. 2. casual
  3. 4. not neat
  4. 5. a synonym for nervous or apprehensive
  5. 6. doesn't know something is happening
  6. 7. in one piece
Down
  1. 1. a synonym for crazy
  2. 2. not straightforward
  3. 3. cheap
  4. 4. undo