Antonyms of adj gelatinous

1 sense of gelatinous

Sense 1
gelatinous, gelatinlike, jellylike -- (thick like gelatin)

INDIRECT (VIA thick) -> thin -- (relatively thin in consistency or low in density; not viscous; "air is thin at high altitudes"; "a thin soup"; "skimmed milk is much thinner than whole milk"; "thin oil")

Similarity of adj gelatinous

1 sense of gelatinous

Sense 1
gelatinous, gelatinlike, jellylike -- (thick like gelatin)
       => thick (vs. thin) -- (relatively dense in consistency; "thick cream"; "thick soup"; "thick smoke"; "thick fog")