How could anyone do all this without leaving behind a scintilla of microscopic evidence?
It does take a certain talent to take Paul Newman and present the actor without a scintilla of excitement.
That had more than a scintilla of substance—is Mitt actually a political shape-shifter?
1690s, "spark, glimmer," hence "least particle, trace," from figurative use of Latin scintilla "particle of fire, spark, glittering speck, atom," probably from PIE *ski-nto-, from root *skai- "to shine, to gleam" (cf. Gothic skeinan, Old English scinan "to shine;" see shine (v.)).