come down with . come down with {v.}, {informal} To become sick with; catch. We all came down with the mumps. After being out in the rain, George came down with a cold. Categories: add yours {informal} {v.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: C Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Post my comment