Center letter: i
Outer letter: a j n o r t
Answers (59):
  janitor
  anion
  annotation
  anoint
  anti
  aria
  atria
  attain
  attrition
  initiation
  initiator
  into
  intonation
  intro
  iota
  iron
  irritant
  irritation
  jinn
  jinni
  join
  joint
  narration
  nation
  ninja
  nitro
  noir
  nori
  notation
  notion
  onion
  oration
  oratorio
  rain
  raita
  rani
  ratio
  ration
  rioja
  riot
  rotation
  roti
  rotini
  taint
  tannin
  tarnation
  tiara
  tint
  titan
  titration
  tori
  torii
  tortoni
  train
  trait
  traitor
  trattoria
  trio
  triton