You can only change ONE letter, AND/OR rearrange the letters currently available. The first word is: WINS
sash
wash
paws
swan
swap
soap
pous
Aha! finally... SOUP
spod
pods
dops
dope
dole Kray - keen on soup, eh?
loud Dedicated to @662. :-)
undo
down
wind
kind
kids
dais
said
aids
soda
dash