keep one's word . keep one's word {v. phr.} To do what one has promised; fulfill one's promise. Paul kept his word and paid me the $250 that he owed me right on time. Categories: add yours time {v. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: K Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss