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