Enter a clue or pattern or both:
The Clue
Icky stuff (4 letter answer)
The Answer
GUNK
Tags
Notes
The answer GUNK is rarely seen, appearing only about once every 1800 puzzles.
Related Clues
Crud
Goo
Slime
Engine buildup
Sticky matter
Unwanted buildup
Definition
GUNK as a noun:
1. (sludge, slime, goo, gook, guck, gunk, muck, ooze) = any thick messy substance