Brain
Brain noun - A very smart person.
Clear head and brain are semantically related. In some cases you can use "Clear head" instead a noun "Brain".
Clear head
Both terms in one sentence
- One of the questions used in Darkwing Duck to overload the brain of a super-genius who used a special ray gun to increase his IQ when he had a clear head.
Source: Train Problem
Cite this Source
Clear head and Brain. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/brain/clear_head
Brain & Clear head. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/brain/clear_head>.
Clear head or Brain. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/brain/clear_head.
Google Ngram Viewer shows how "brain" and "clear head" have occurred on timeline