unfood

From un- +‎ food.

unfood (countable and uncountable, plural unfoods)

1. Foodstuff that is not fit for consumption; unhealthy or unnutritious food.
   • 1990, Terry Pratchett, Neil Gaiman, Good Omens, published 2011, →ISBN, page 162:

     All around him people were eating their unfood with, if not actual evidence of enjoyment, then with no more actual disgust than was to be found in burger chains all over the planet.

   • 2007, Diana Mourer, Go Lite on White and Be Discreet with Sweets:

     There is no way to eat and drink all the unfood and beverages and still come out healthy and strong.

   • 2010, Raymond Francis, Michele King, Never Be Fat Again:

     Sugar is added to the majority of processed foods, but refined sugar is actually an unfood. An unfood robs you of nutrition.

• junk food