OLDEST is a playable word

old Scrabble® Dictionary

adjective
older, oldest or elder, eldest
living or existing for a relatively long time
noun
pl. olds
an individual of a specified age
87 Playable Words can be made from "OLDEST"
   2-Letter Words (13 found)
   3-Letter Words (28 found)
   5-Letter Words (11 found)
   6-Letter Words (2 found)