← BackshareGuessviscid/ˈvɪsɪd/adjectiveHaving a thick, sticky, glue-like consistency.After cooking for hours, the sauce became viscid and clung to the spoon.The frog's tongue is viscid, helping it catch insects.The viscid sap dripped slowly from the pine tree.SynonymsgummystickyglueyAntonymsslippery