Center letter: l
Outer letter: a d i n v y
Answers (50):
  invalidly
  allay
  ally
  anal
  anally
  annal
  anvil
  avail
  avidly
  daily
  dally
  dandily
  daylily
  dial
  diddly
  dill
  dilly
  dillydally
  idly
  idyl
  idyll
  illy
  inlaid
  inland
  inlay
  invalid
  lady
  laid
  lain
  lanai
  land
  landlady
  lava
  lily
  livid
  lividly
  nail
  naval
  vainly
  valid
  validly
  vandal
  vanilla
  vanillin
  vial
  villa
  villain
  villainy
  vinyl
  vividly