Center letter: f
Outer letter: c d e n o u
Answers (40):
  cofounded
  confounded
  coffee
  cofound
  confound
  cuff
  cuffed
  defend
  defended
  defund
  defunded
  doff
  doffed
  duff
  fecund
  feed
  fence
  fenced
  fend
  fended
  feud
  feuded
  fond
  fondue
  food
  found
  founded
  fund
  funded
  offed
  offend
  offended
  uncuff
  uncuffed
  undefended
  unfed
  unfenced
  unfounded
  unfunded
  unoffended