"th"

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Across
  1. 3. use this to sew
  2. 4. white things inside your mouth
  3. 6. the opposite of thick
  4. 7. addition and subtract are types of this
  5. 8. a very slow animal
Down
  1. 1. a person who steals things
  2. 2. take one of these instead of a shower
  3. 5. hear this when it's raining
  4. 6. only humans have this finger
  5. 7. like a butterfly but comes out at night
  6. 9. after second place is