day by day . day by day {adv.} Gradually. The patient got better day by day. Categories: add yours {adv.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 » In RussianTo section: D Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry