Center letter: d
Outer letter: e f h i m u
Answers (39):
  dehumidified
  humidified
  deed
  deeded
  deem
  deemed
  defied
  deified
  died
  dime
  dimmed
  dude
  duff
  dumdum
  dummied
  eddied
  edified
  feed
  feud
  feuded
  fifed
  fumed
  heed
  heeded
  hemmed
  hide
  hied
  hued
  huffed
  humid
  hummed
  medium
  memed
  midi
  miffed
  mimed
  muddied
  muffed
  mummified