Center letter: m
Outer letter: a c d i o t
Answers (40):
  diatomic
  idiomatic
  admit
  amid
  ammo
  atom
  atomic
  cami
  camo
  coma
  comic
  comma
  commit
  dammit
  diatom
  doom
  idiom
  imam
  macadam
  macadamia
  madam
  maid
  maim
  mama
  mamma
  mica
  midi
  mimic
  mitt
  moat
  momma
  mood
  moot
  motto
  omit
  tatami
  timid
  tomato
  tomcat
  tomtit