i Register
In some senses, gunk is marked as informal. Watch for register when choosing this word.
noun
Grime, dirt, slime; any vague, messy, or unknown substance.
I washed all the gunk off the light fixture, and found that it was white, not brown.
Don't get gunk on me. I took a bath last Saturday and I'm all clean.
A subculture of 21st century American males, combining elements of modern gothic culture with punk rock.
A member of the gunk subculture.
verb
To soil or make dirty.