goo

/ɡuː/
noun
  1. A sticky, wet, or messy substance, often soft and unpleasant.
    • There was some green goo on the sidewalk that I didn't want to step in.
    • I accidentally spilled sticky goo from the jar all over the kitchen counter.
    • The kids made a slimy goo by mixing glue and borax.
  2. Excessively sentimental or romantic language or behavior.
    • His speech was pure goo, with no real substance.
    • The movie was full of romantic goo that made me roll my eyes.
    • I can't stand all that goo in love songs; it's just too cheesy.