Antonyms of adj argillaceous

1 sense of argillaceous

Sense 1
argillaceous (vs. arenaceous), clayey -- (resembling or containing clay; "argillaceous rocks")

arenaceous (vs. argillaceous), sandy, sandlike -- (resembling or containing or abounding in sand; or growing in sandy areas; "arenaceous limestone"; "arenaceous grasses")

Similarity of adj argillaceous

1 sense of argillaceous

Sense 1
argillaceous (vs. arenaceous), clayey -- (resembling or containing clay; "argillaceous rocks")