RIGIDITY is a playable word

rigidity Scrabble® Dictionary

noun
pl. rigidities
the state of being rigid
27 Playable Words can be made from "RIGIDITY"
   2-Letter Words (4 found)
   3-Letter Words (8 found)
   4-Letter Words (10 found)
   5-Letter Words (4 found)
   8-Letter Words (1 found)