compare notes . compare notes {v. phr.}, {informal} To exchange thoughts or ideas about something; discuss together. Mother and Mrs. Barker like to compare notes about cooking. Categories: add yours {informal} {v. phr.} 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 Add my comment