MADDER is a playable word

madder Scrabble® Dictionary

noun
pl. madders
a perennial herb
48 Playable Words can be made from "MADDER"
   2-Letter Words (12 found)
   3-Letter Words (15 found)
   4-Letter Words (12 found)
   5-Letter Words (8 found)
   6-Letter Words (1 found)