nodding acquaintance . nodding acquaintance {n.} Less than casual acquaintance. I have never spoken to the chancellor; we have only a nodding acquaintance. Categories: add yours {n.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: N Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Add my comment