Gooey stuff is a term used to describe a variety of substances that are thick, viscous, and often sticky. EPOXY (5 letters) is a synthetic material used in adhesives and sealants. Gunge (5 letters) is a British slang term for a thick, slimy substance. GEL (3 letters) is a semi-solid material made from a liquid suspended in a solid matrix. GOOP (4 letters) is a slang term for a sticky, slimy substance. SLIME (5 letters) is a soft, wet, and slippery substance. OOZE (4 letters) is a slow-moving, viscous liquid. GLOP (4 letters) is a slang term for a thick, slimy substance. TAR (3 letters) is a black, viscous liquid derived from the distillation of organic materials.