Flash
Flash noun - A sudden and usually temporary growth of activity.
Usage example: a flash of last-minute trips to the video store before the onset of the big snowstorm
Outburst is a synonym for flash in burst topic. In some cases you can use "Outburst" instead a noun "Flash", when it comes to topics like instant, demonstration, volcanic eruption.
Outburst
Outburst noun - A sudden intense expression of strong feeling.
Usage example: the judge directed the courtroom spectators to refrain from any outbursts when the verdict was read
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Synonyms for Outburst
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Outburst and Flash. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/flash/outburst
Flash & Outburst. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/flash/outburst>.
Outburst or Flash. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/flash/outburst.
Google Ngram Viewer shows how "flash" and "outburst" have occurred on timeline