Birdbrained and Preposterous

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

Preposterous and birdbrained are semantically related. In some cases you can use "Preposterous" instead an adjective "Birdbrained".

Preposterous

Preposterous adjective - Showing or marked by a lack of good sense or judgment.
Usage example: a preposterous suggestion to go swimming in this freezing weather

Birdbrained and preposterous are semantically related. Sometimes you can use "Birdbrained" instead an adjective "Preposterous".
Cite this Source
Preposterous and Birdbrained. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/birdbrained/preposterous
Birdbrained & Preposterous. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/birdbrained/preposterous>.
Preposterous or Birdbrained. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/birdbrained/preposterous.
Google Ngram Viewer shows how "birdbrained" and "preposterous" have occurred on timeline