Antonyms of adj costive

1 sense of costive

Sense 1
costive (vs. laxative) -- (retarding evacuation of feces; binding; constipating)

laxative (vs. costive) -- (stimulating evacuation of feces)
        => aperient -- (mildly laxative)
        => cathartic, evacuant, purgative -- (strongly laxative)

Similarity of adj costive

1 sense of costive

Sense 1
costive (vs. laxative) -- (retarding evacuation of feces; binding; constipating)