DROPDOWN is a playable word

dropdown Scrabble® Dictionary

noun
pl. dropdowns
a menu that appears on a computer screen below a selected item
53 Playable Words can be made from "DROPDOWN"
   2-Letter Words (9 found)
   3-Letter Words (19 found)
   4-Letter Words (18 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)