Center letter: o
Outer letter: g i l r v y
Answers (30):
  virology
  gigolo
  glory
  goggly
  golly
  googly
  googol
  gory
  grog
  groggily
  groggy
  groovy
  gyro
  igloo
  ivory
  logo
  logroll
  logy
  loll
  lorry
  oily
  olio
  orgy
  rigor
  roil
  roll
  vigor
  viol
  vlog
  yogi