Center letter: v
Outer letter: e l n o p r
Answers (41):
  provolone
  eleven
  elver
  envelop
  envelope
  even
  evener
  ever
  evolve
  levee
  level
  leveler
  lever
  love
  lovelorn
  lover
  nerve
  never
  novel
  oven
  over
  peeve
  plover
  popover
  prove
  proven
  reeve
  reprove
  revel
  reveler
  revere
  revolve
  revolver
  rollover
  rove
  rover
  veep
  veer
  veneer
  verve
  vole