heavy heart . heavy heart {n. phr.} A feeling of being weighed down with sorrow; unhappiness. They had very heavy hearts as they went to the funeral. Categories: add yours feelings sorrow {n. phr.} Source: A Dictionary of American Idioms by A. Makkai, M.T. Boatner, J.E. Gates © 2024 To section: H Subscribe to: American IdiomsIdioms feedEnglish languageHome page and general feed Discuss