← BackshareGuessmucid/ˈmjusɪd/adjectiveHaving a slimy or moldy quality; musty or stale.The basement had a mucid smell from old damp boxes.He threw away the mucid bread that had been left in the pantry.The mucid film on the pond's surface indicated pollution.SynonymsmoldymustyslimyAntonymsfreshclean