Center letter: u
Outer letter: d e i n t v
Answers (42):
  uninvited
  denude
  denuded
  dude
  duet
  duetted
  dune
  dunned
  duvet
  endue
  endued
  ennui
  etude
  intuit
  intuited
  intuitive
  nude
  nudie
  tune
  tuned
  tutee
  tutted
  tutti
  tutu
  undid
  undivided
  undue
  unedited
  uneven
  unintended
  uninventive
  unit
  unite
  united
  unitive
  unneeded
  untended
  untie
  untied
  untune
  untuned
  venue