1. Any thick, viscous matter
   - sludge, slime, goo, goop [N. Amer], gook, gunk, muck, ooze, thick, gloop [Brit, Cdn]

Derived forms: gucks

Type of: matter

• unstructured
• unstrung
• unstuck
• unstudied
• unstudious
• unstuff
• unstylish
• unsuasible
• unsubdivided
• unsubduable
• unsubdued
• unsubmissive
• unsubscribe
• unsubstantial
• unsubstantialise
• unsubstantialize
• unsubstantiated
• unsubtle
• unsuccessful
• unsuccessful person
• unsuccessfully
• unsufferable
• unsugared
• unsuitability
• unsuitable