Center letter: g
Outer letter: f i l n v y
Answers (25):
  vilifying
  fifing
  figgy
  filing
  filling
  fining
  fling
  flinging
  flying
  gigging
  giggling
  giggly
  gill
  gilling
  ginning
  giving
  infilling
  inning
  lining
  living
  lying
  niggling
  vigil
  vivifying
  vying