Center letter: h
Outer letter: a c d e i n
Answers (50):
  chained
  echidna
  enchained
  hacienda
  ache
  ached
  ahead
  cache
  cached
  chad
  chai
  chain
  chance
  chanced
  chia
  chic
  chica
  chichi
  chide
  chided
  chin
  china
  chinned
  cinch
  cinched
  dacha
  deadhead
  deadheaded
  each
  echinacea
  enchain
  enhance
  enhanced
  hand
  handed
  head
  headache
  headed
  heed
  heeded
  heinie
  hence
  henna
  hennaed
  hidden
  hide
  hind
  inch
  inched
  niche