scintillating, scintillatingly 1. That which scintillates; sparkling. 2. Hallucinatory flickering patterns and gaps in the visual field as seen in migraine. 3. Interesting, exciting and clever: 'Scintillating conversation with a scintillating personality.' Etymologically related 'light, shine, glow' word familie... Found on http://www.wordinfo.info/words/index/info/view_unit/1909/