'spark, glimmer' (related to 'shine'), especially in
"There is not a scintilla of evidence"
"to make the most outlandish and destructive claims without providing a scintilla of evidence to support them" - https://www.washingtonpost.com/news/post-politics/wp/2017/03/04/trump-accuses-obama-of-nixonwatergate-plot-to-wire-tap-trump-tower/
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