Dense
Dense adjective - Not having or showing an ability to absorb ideas readily.
Usage example: she accused him of being dense when he didn't seem to understand her at first
Thickheaded is a synonym for dense in ability topic. In some cases you can use "Thickheaded" instead an adjective "Dense", when it comes to topics like stupid.
Thickheaded
Thickheaded adjective - Not having or showing an ability to absorb ideas readily.
Usage example: don't suppose that he's thickheaded just because he doesn't understand English very well
Dense is a synonym for thickheaded in ability topic. You can use "Dense" instead an adjective "Thickheaded", if it concerns topics such as ignorant.
Mutual synonyms
Cite this Source
Thickheaded and Dense. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/dense/thickheaded
Dense & Thickheaded. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/dense/thickheaded>.
Thickheaded or Dense. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/dense/thickheaded.
Google Ngram Viewer shows how "dense" and "thickheaded" have occurred on timeline