RIGIDER is a playable word

rigid Scrabble® Dictionary

adjective
rigider, rigidest
not flexible; strict, harsh
39 Playable Words can be made from "RIGIDER"
   2-Letter Words (6 found)
   3-Letter Words (14 found)
   4-Letter Words (8 found)
   5-Letter Words (8 found)
   6-Letter Words (1 found)
   7-Letter Words (2 found)