Group 4

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Across
  1. 5. dangerously unstable
  2. 6. tending toward one direction
  3. 7. clear; easy to understand
  4. 9. having keen understanding; discerning
  5. 10. shallow; on the surface only
Down
  1. 1. safe from harm; protected
  2. 2. explanatory
  3. 3. to support ; to prop up
  4. 4. to intimidate; to discourage
  5. 8. constant; without variety