sell one on sell one on {v. phr.} To persuade someone to do something. We were able to sell our wealthy uncle on the idea of having a joint family vacation in Hawaii. Categories: add yours {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: S Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry