CARBONACEOUS Scrabble 18 Words With Friends 23 Scrabble letter values: C3A1R1B3O1N1A1C3E1O1U1S1 = 18 Definition adjective relating to or consisting of or yielding carbon. — synonyms: carbonous, carbonic, carboniferous See all 599 words you can make from CARBONACEOUS → 12-letter words Words starting with C Words ending with S ← Unscramble different letters