Added 10 October 2026 thunderburst noun Categories: Obscure Words noun ! Definition from Wiktionary (CC BY-SA). More about thunderburst at Wordnik → Where our words come from → A burst of thunder. Origin From thunder + burst. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: thunderblastthunderboltthunderstrokethunderthundershockrainburstcloudburstfulminantthunderingthundershowercloud-burst Back to today's word