alive with . alive with {prep.}, {informal} Crowded with; filled with. The lake was alive with fish. The stores were alive with people the Saturday before Christmas. Categories: add yours {informal} {prep.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: A Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry