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noun

halfwit

Halfwit (noun) means a foolish or stupid person (informal and rather insulting). Example: “Only a halfwit would leave the car running with the keys inside.”

noun
1
A foolish or stupid person (informal and rather insulting).
"Only a halfwit would leave the car running with the keys inside."

How to use halfwit

Learner’s notes

In plain EnglishA dismissive word for someone acting foolishly.

When to use it

Informal and insulting — avoid it in polite or professional writing.

Word forms

halfwits plural

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Only a _____ would leave the car running with the keys inside.

Etymology

From half + wit, first recorded in the early 1600s — someone with only "half" of the mental sharpness expected.

· First attested 1600

Class of 1600 halfwit joined the language around 1600.
See the full Class of 1600 →

Frequently asked questions

What does “halfwit” mean?

The word “halfwit” means a foolish or stupid person (informal and rather insulting). In plain terms, a dismissive word for someone acting foolishly.

How do you use “halfwit” in a sentence?

Here is “halfwit” used in a sentence: “Only a halfwit would leave the car running with the keys inside.”

What part of speech is “halfwit”?

“Halfwit” is a noun.

Where does the word “halfwit” come from?

The word “halfwit” dates back to around 1600. From half + wit, first recorded in the early 1600s — someone with only "half" of the mental sharpness expected.

Definitions: FreeDict original editorial