-ly or -ness words

123456
Across
  1. 3. to not feel well -ness word
  2. 4. to be very healthy -ness word
  3. 6. to do something while being happy -ly word
Down
  1. 1. to be in very good shape -ness word
  2. 2. to not be fast -ly word
  3. 5. to be sad -ly word