im, ir, il, in

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Across
  1. 4. not following a pattern or rule; uneven
  2. 5. not acting responsibly; not taking care of duties or actions
  3. 7. not making sense; not using good reasoning
  4. 9. not active; not moving or participating
Down
  1. 1. not fully grown or acting younger than expected
  2. 2. not able to happen or be done
  3. 3. not related to the topic or not important
  4. 4. not correct; wrong
  5. 6. against the law
  6. 8. not willing to wait; wanting something right away