SOURING is a playable word

sour Scrabble® Dictionary

adjective
sourer, sourest
sharp or biting to the taste
verb
soured, souring, sours
to make or become sour
108 Playable Words can be made from "SOURING"
   2-Letter Words (14 found)
   3-Letter Words (31 found)
   6-Letter Words (8 found)
   7-Letter Words (2 found)