SUBGROUP Scrabble 13 Words With Friends 18 Scrabble letter values: S1U1B3G2R1O1U1P3 = 13 Definition noun a distinct and often subordinate group within a group. noun (mathematics) a subset (that is not empty) of a mathematical group. See all 85 words you can make from SUBGROUP → 8-letter words Words starting with S Words ending with P ← Unscramble different letters