chicken-brained . chicken-brained {adj.} Stupid; narrow-minded; unimaginative. I can't understand how a bright woman like Helen can date such a chicken-brained guy as Oliver. Categories: add yours {adj.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: C Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Comment on this entry