Center letter: t
Outer letter: d g h i n o
Answers (49):
  goodnight
  hotdogging
  dhoti
  digit
  dint
  ditto
  doth
  doting
  dotting
  goth
  hint
  hinting
  hitting
  hoot
  hooting
  hotdog
  idiot
  igniting
  ignition
  ingot
  into
  intoning
  night
  ninth
  nothing
  noting
  notion
  onto
  thigh
  thin
  thing
  thinning
  thong
  tiding
  tight
  tinging
  tint
  tinting
  tithing
  togging
  tong
  tonging
  tonight
  toning
  toon
  toot
  tooth
  tooting
  toting