Brain wave
Brain wave noun - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph.
Unattainable and brain wave are semantically related. In some cases you can use "Unattainable" instead an adjective phrase "Brain wave".
Unattainable
Unattainable adjective - Hard or impossible to get to or get at.
Brain wave and unattainable are semantically related. Sometimes you can use "Brain wave" instead an adjective "Unattainable".
Cite this Source
Unattainable and Brain wave. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/brain_wave/unattainable
Brain wave & Unattainable. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/brain_wave/unattainable>.
Unattainable or Brain wave. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/brain_wave/unattainable.
Google Ngram Viewer shows how "brain wave" and "unattainable" have occurred on timeline