Center letter: r
Outer letter: d i l o w y
Answers (30):
  rowdily
  wordily
  dolor
  door
  dory
  dowry
  drill
  droid
  droll
  drolly
  drool
  drooly
  dryly
  lord
  lordly
  lordy
  lorry
  odor
  rill
  roil
  roll
  rood
  rowdy
  wiry
  word
  wordy
  world
  worldly
  worry
  wryly