Center letter: l
Outer letter: d f g i n o
Answers (63):
  flooding
  folding
  fondling
  diddling
  dildo
  dill
  doling
  doll
  dolling
  doodling
  fiddling
  filing
  fill
  filling
  fling
  flinging
  flog
  flogging
  flood
  foil
  foiling
  fold
  folio
  fool
  fooling
  giggling
  gigolo
  gild
  gilding
  gill
  gilling
  gliding
  goggling
  gold
  golf
  golfing
  googling
  googol
  idling
  idol
  igloo
  infill
  infilling
  lingo
  lining
  lion
  lodging
  logging
  login
  logo
  loin
  loll
  lolling
  long
  longing
  loon
  niggling
  nonillion
  noodling
  ogling
  oiling
  olio
  oolong