GIBBOSE Scrabble 12 Words With Friends 15 Scrabble letter values: G2I1B3B3O1S1E1 = 12 Definition adjective (used of the moon) more than half full. — synonyms: gibbous See all 55 words you can make from GIBBOSE → 7-letter words Words starting with G Words ending with E ← Unscramble different letters