Nervous Nellie Nervous Nellie {n.}, {informal} A timid person who lacks determination and courage. I say we will never win if we don't stop being Nervous Nellies! Categories: add yours {informal} {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 Discuss