A History of Short Words

From the New York Times Crossword Puzzle

DWARF

Thu, 2 Jan '25
One of a Disney septet
Tue, 25 Jul '23
Happy or Sleepy, e.g.
Tue, 2 Aug '22
Kind of planet
Mon, 31 Jan '22
Dopey or Sneezy
Mon, 16 Aug '21
___ planet (designation for Pluto)