Birdbrained
Birdbrained adjective - Not having or showing an ability to absorb ideas readily.
Usage example: a group of apparently birdbrained teenagers were clearly bored by the memorial
Fallacious and birdbrained are semantically related. In some cases you can use "Fallacious" instead an adjective "Birdbrained".
Fallacious
Fallacious adjective - Not using or following good reasoning.
Birdbrained and fallacious are semantically related. Sometimes you can use "Birdbrained" instead an adjective "Fallacious".
Mutual synonyms
Cite this Source
Fallacious and Birdbrained. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/birdbrained/fallacious
Birdbrained & Fallacious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/birdbrained/fallacious>.
Fallacious or Birdbrained. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/birdbrained/fallacious.
Google Ngram Viewer shows how "birdbrained" and "fallacious" have occurred on timeline