ARGILLACEOUS /ɑːdʒɪlˈeɪʃəs/ Scrabble 15 Words With Friends 20 Scrabble letter values: A1R1G2I1L1L1A1C3E1O1U1S1 = 15 Definition adjective resembling or containing clay. — synonyms: clayey Examples “argillaceous rocks” See all 991 words you can make from ARGILLACEOUS → 12-letter words Words starting with A Words ending with S ← Unscramble different letters