fattier

/F AE1 T IY0 ER0/
adjective
  1. 1

    Containing, composed of, or consisting of fat.

  2. 2

    Like fat; greasy.

  3. 3

    Literally or figuratively large.

Source: https://en.wiktionary.org/wiki/fattier, https://en.wiktionary.org/wiki/fatty