filmiest

/F IH1 L M IY0 IH0 S T/
adjective
  1. 1

    Resembling or made of a thin film; gauzy

  2. 2

    Covered by (or as if by) a film; hazy

Source: https://en.wiktionary.org/wiki/filmiest, https://en.wiktionary.org/wiki/filmy