Baby talk

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Across
  1. 5. a human from 0,3 to 1 year
  2. 6. people who can hear
  3. 7. getting better, stronger
  4. 8. something like IQ test
  5. 10. means usually
Down
  1. 1. synonym to socialize
  2. 2. person who can't hear
  3. 3. people do this when they can't talk
  4. 4. means searching one more time
  5. 9. getting larger on size and age