Answer: mealiest

AnswerCrossword Clue
MEALIESTMost soft-spoken.
MEALIESTMost powdery.
MEALIESTMost crumbly
mealiestMEALY, covered with meal
mealiestof or containing meal; farinaceous
mealiestcovered with or as if with meal or powder
mealiesthaving the qualities of meal; powdery; soft, dry, and crumbly