Dull
Dull adjective - Not having or showing an ability to absorb ideas readily.
Usage example: the importance of the discovery was lost on the dull minds of his colleagues
Simple is a synonym for dull in ability topic. In some cases you can use "Simple" instead an adjective "Dull", when it comes to topics like stupid, unintelligent.
Simple
Simple adjective - Not having or showing an ability to absorb ideas readily.
Usage example: don't be so quick to characterize people who have trouble with computers as simple
Dull is a synonym for simple in ability topic. Sometimes you can use "Dull" instead an adjective "Simple", if it concerns topics such as feeble-minded.
Mutual synonyms
Both words in one sentence
- Obfuscating Stupidity: Not (usually) deliberate on John's part (though sometimes he may protest too much), but many people who interact with him take him to be a very simple and dull fellow, interested only in wrestling and farming.
Source: Literature / Lorna Doone - Simple combinations of letters are dull and repetitive, but are far easier to memorize and write down.
Source: Boring But Practical / Real Life -
And because just throwing simple explosives would be too dull, she combines this with controlling corpses that she's sewn gunpowder into.
Source: Anime / Ninja Scroll
Cite this Source
Simple and Dull. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/dull/simple
Dull & Simple. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/dull/simple>.
Simple or Dull. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/dull/simple.
Google Ngram Viewer shows how "dull" and "simple" have occurred on timeline