# half a head

idiom

Source: https://englishreference.com/idiom/half-a-head
Updated: 2026-08-10

## Meaning

Synonym of half a brain.

## Examples

- He does not have half a head for business.
- If you had half a head, you would realize that this plan is dangerous.
- She acted as if she did not have half a head, ignoring every warning about the impending storm.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.