Center letter: m
Outer letter: a i o r t v
Answers (34):
  motivator
  ammo
  armor
  aroma
  atom
  imam
  imitator
  maim
  mama
  mamma
  marm
  marmot
  mart
  mirror
  mitt
  moat
  momma
  moor
  moot
  moratoria
  mortar
  motor
  motto
  omit
  roam
  room
  tamari
  tatami
  tomato
  tomtit
  tram
  trim
  vomit
  vroom