stuffed up . stuffed up {adj. phr.} Impeded; blocked. Our kitchen sink is all stuffed up so I have to call the plumber. Categories: add yours {adj. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: S Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss