Center letter: o
Outer letter: a d l m r u
Answers (53):
  modular
  aloud
  ammo
  amoral
  amour
  ardor
  armload
  armor
  aroma
  aurora
  auroral
  dodo
  doll
  dollar
  dolma
  dolor
  doodad
  doom
  door
  dorado
  dorm
  doula
  dour
  droll
  drool
  drumroll
  load
  loam
  loll
  loom
  lord
  loud
  malodor
  modal
  molar
  mold
  moll
  momma
  mood
  moola
  moor
  moral
  mudroom
  odor
  oral
  ramrod
  road
  roam
  roar
  roll
  rood
  room
  rumor