Center letter: e
Outer letter: a d f h n o
Answers (55):
  offhanded
  added
  addend
  addenda
  aeon
  ahead
  anode
  dead
  deaden
  deadened
  deadhead
  deadheaded
  deaf
  deafen
  deafened
  dean
  deed
  deeded
  defend
  defended
  doffed
  done
  donee
  donned
  ended
  ennead
  fade
  faded
  fanned
  feed
  fend
  fended
  handed
  head
  headed
  heed
  heeded
  henna
  hennaed
  hoed
  hone
  honed
  hooded
  hoofed
  need
  needed
  nene
  neon
  nodded
  node
  none
  odeon
  offed
  offend
  offended