Deliquesce: verb; (of organic matter) become liquid, typically during decomposition. Mid 18th century from Latin deliquescere ‘dissolve’, from de- ‘down’ + liquescere ‘become liquid’ (Oxford Dictionary).
These Shaggy inkcaps (Coprinus comatus) may look sturdy and robust but, like all inkcaps and many other species of fungi, they only last a few days, sometimes as little as 24 hours, before turning into a rather disgusting-looking liquid mush, as shown by the specimen below. If you want to read more about the how and why of that process, about the inkcaps’ ‘habit of destroying themselves with their own enzymes’, check out The Dish on Deliquescence in Coprinus Species by Jonathan Landsman on the Cornell Mushroom blog.
Many humans may not know that inkcaps quickly deliquesce but slugs do. This slimy beastie was digging in to a Shaggy inkcap delicacy before the fungus had a chance to digest itself.