Zero Hour

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Across
  1. 2. to drink (something) in small quantities
  2. 3. to make a hissing sound as if in burning or frying
  3. 4. to contract the brow ;an expression of displeasure
  4. 5. to fall suddenly and helplessly
  5. 7. a low indistinct but often continuous sound
  6. 9. to cry out in a high-pitched voice
Down
  1. 1. to laugh with repeated short catches of the breath
  2. 3. to shut forcibly and noisily : BANG
  3. 4. to cry with convulsive catching of the breath
  4. 5. to walk,or step especially heavily
  5. 6. to laugh with repeated short catches of the breath
  6. 8. unable to think in a clear or sensible way CRAZY