Flack
Flack noun - Artillery designed to shoot upward at airplanes.
Moan
Moan noun - A long low sound indicating pain or grief.
Mutual synonyms
Cite this Source
Moan and Flack. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/flack/moan
Flack & Moan. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/flack/moan>.
Moan or Flack. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/flack/moan.
Google Ngram Viewer shows how "flack" and "moan" have occurred on timeline