Center letter: r
Outer letter: a g h l m o
Answers (34):
  hologram
  aargh
  agar
  agora
  alarm
  amoral
  armor
  aroma
  glamor
  gram
  gramma
  grammar
  grog
  groom
  haram
  harm
  hoar
  hoorah
  hora
  horror
  largo
  logogram
  logroll
  mammogram
  marm
  molar
  moor
  moral
  oral
  raga
  roam
  roar
  roll
  room