Center letter: c
Outer letter: a g i l o y
Answers (48):
  glaciology
  illogically
  logically
  acacia
  acai
  acyclic
  cacao
  cagily
  cagy
  calico
  call
  calla
  callaloo
  ciao
  cilia
  clay
  cloaca
  clog
  cloy
  coal
  coca
  cocci
  cocoa
  coil
  cola
  colic
  cool
  coolly
  coyly
  cyclic
  cyclical
  cyclically
  glacial
  glacially
  icily
  iliac
  illogic
  illogical
  lacy
  laic
  laical
  lilac
  local
  locally
  loci
  loco
  logic
  logical