Center letter: f
Outer letter: d e i l p u
Answers (49):
  upfield
  defied
  defile
  defiled
  deified
  duff
  duffel
  duffle
  edified
  feed
  feel
  felid
  fell
  felled
  feud
  feuded
  fiddle
  fiddled
  fief
  field
  fielded
  fife
  fifed
  file
  filed
  fill
  filled
  fillip
  fled
  flee
  flied
  flip
  flipped
  flue
  fluff
  fluffed
  fluid
  fuddle
  fuddled
  fuel
  fueled
  fulfill
  fulfilled
  full
  life
  pelf
  piffle
  puff
  puffed