Slimy stuff is a term used to describe a variety of substances that are slimy, sticky, and often unpleasant to the touch. GUCK (4 letters), GOOP (4 letters), GOO (3 letters), OOZE (4 letters), and GUNK (4 letters) are all words that can be used to describe slimy stuff. GUCK is a thick, slimy substance, while GOOP is a sticky, slimy liquid. GOO is a thick, viscous liquid, OOZE is a slow-moving, slimy liquid, and GUNK is a thick, slimy substance.