Antonyms of adj silty

1 sense of silty

Sense 1
silty -- (full of silt; "silty soil")

INDIRECT (VIA loose) -> compact -- (closely and firmly united or packed together; "compact soil"; "compact clusters of flowers")

Similarity of adj silty

1 sense of silty

Sense 1
silty -- (full of silt; "silty soil")
       => loose (vs. compact) -- (not compact or dense in structure or arrangement; "loose gravel")