gunk up

English

Verb

gunk up (third-person singular simple present gunked up, present participle gunking up, simple past and past participle gunked up)

1. (informal, transitive) To soil or dirty; to mess up; to clog.
   • 2012, The Onion Book of Known Knowledge, page 102:

     [Your intake valve] is looking pretty gunked up. No wonder you're not getting any juice.

   I don't want to gunk up my new shoes, so I'll wear the old ones in the garden.

   The sandpaper strips off the old green paint, but it gunks up quickly.