Complaints
Flak and complaints are semantically related In some cases you can replace term "Flak" with "Complaints", this words are similar.
Flak
Flak noun - Artillery designed to shoot upward at airplanes.
Complaints and flak are semantically related in criticism topic. Sometimes you can use "Complaints" instead a noun "Flak".
Mutual synonyms
Cite this Source
Flak and Complaints. (2016). Retrieved 2026, August 12, from https://thesaurus.plus/related/complaints/flak
Complaints & Flak. N.p., 2016. Web. 12 Aug. 2026. <https://thesaurus.plus/related/complaints/flak>.
Flak or Complaints. 2016. Accessed August 12, 2026. https://thesaurus.plus/related/complaints/flak.
Google Ngram Viewer shows how "complaints" and "flak" have occurred on timeline