Vacuous
Vacuous adjective - Not having or showing an ability to absorb ideas readily.
Usage example: a movie that was enthusiastically derided for its vacuous dialogue
Witless is a synonym for vacuous in irrational topic. In some cases you can use "Witless" instead the word "Vacuous" as an adjective or a noun.
Witless
Witless adjective - Not having or showing an ability to absorb ideas readily.
Usage example: a dog so witless that it is barely trainable
Vacuous is a synonym for witless in irrational topic. You can use "Vacuous" instead the word "Witless" as an adjective or a noun.
Mutual synonyms
Cite this Source
Witless and Vacuous. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/vacuous/witless
Vacuous & Witless. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/vacuous/witless>.
Witless or Vacuous. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/vacuous/witless.
Google Ngram Viewer shows how "vacuous" and "witless" have occurred on timeline