sidekick sidekick {n.} A companion; a close friend of lesser status. Wherever you see Dr. Howell, Dr. Percy, his youthful sidekick is sure to be present as well. Categories: add yours friends {n.} 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 Add my comment