Center letter: i
Outer letter: a d l n o t
Answers (59):
  additional
  dilation
  addition
  aioli
  alit
  anion
  annotation
  anoint
  anti
  atilt
  attain
  dial
  dildo
  dill
  dino
  dint
  ditto
  donation
  idiot
  idol
  initial
  initiation
  inlaid
  inland
  into
  intonation
  iota
  laid
  lain
  lanai
  lanolin
  lilt
  lint
  lion
  loin
  lotion
  naiad
  nail
  nation
  national
  nonillion
  notation
  notational
  notion
  notional
  olio
  onion
  tail
  taint
  tali
  tallit
  tannin
  tidal
  till
  tilt
  tint
  titan
  titillation
  toil