GROUNDMASS Scrabble 14 Words With Friends 18 Scrabble letter values: G2R1O1U1N1D2M3A1S1S1 = 14 Definition noun (geology) the matrix of fine-grained crystalline material in which larger crystals are embedded. See all 452 words you can make from GROUNDMASS → 10-letter words Words starting with G Words ending with S ← Unscramble different letters