1
: very stupid or foolish
imbecilic comments
The imbecilic characters, whose vocabulary does not stray much beyond "this is cool" or "it sucks" …—Jonathan Freedland
2
dated, now offensive; see usage paragraph below : affected with moderate intellectual disability
Usage of Imbecilic

The terms idiot, imbecile, moron, and their derivatives, such as imbecilic, were formerly used as technical descriptors in medical, educational, and regulatory contexts. The use of these terms in the context of extreme intellectual disability was broadly rejected by the close of the 20th century and is now considered offensive.

Examples of imbecilic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
There’s a level of seriousness that belies the 90-minute comedy film he’s made, which features an imbecilic white rapper who speaks in Caribbean-British slang and a contraption that shoots bullets out of one’s rear end. — Lacey Rose, HollywoodReporter, 21 Oct. 2026

Word History

First Known Use

1872, in the meaning defined at sense 1

Time Traveler
The first known use of imbecilic was in 1872

Browse Nearby Words

Cite this Entry

“Imbecilic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/imbecilic. Accessed 27 Oct. 2026.

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