worlds apart worlds apart {adj. phr.} Completely different; in total disagreement. Jack and Al never agree on anything; they are worlds apart in their thinking. Categories: add yours {adj. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2025 To section: W Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss