telltale

At the observatory, most neutrinos pass straight through the ice, but occasionally one interacts with it, producing particles that give off a telltale flash of light.

From BBC ● Oct. 6, 2026

There was a telltale uncanniness to it—people clapping too slowly, as if underwater—but there was no disclaimer that it was fake.

From Slate ● Sep. 22, 2026

In the school year ended in May 2026, the district recorded 1,000 more visits to the nurse’s office when compared with the year prior—driven by panic attacks and heart palpitations, telltale signs of caffeine overconsumption.

From The Wall Street Journal ● Sep. 15, 2026

The nebula's brilliant crimson glow comes from hydrogen alpha emissions, a telltale sign that new stars are actively forming.

From Science Daily ● Jul. 5, 2026

Aru saw the telltale signs of Mini’s confidence waning: glasses off-kilter, lip tucked between her teeth.

From "Aru Shah and the End of Time" by Roshani Chokshi

They found that when a phishing pop-up had clear malevolent telltales, like misspellings, the phone and PC users tended to avoid it at similar rates.

From The Wall Street Journal ● Dec. 9, 2025

“Loss of communication at these screens could interrupt updating of the speedometer, gear selection indicators, telltales and other in-vehicle notifications.”

From The Verge ● May 25, 2022

And because this particular case had so many of those telltales, we went ahead and filed this brief.

From Slate ● Nov. 12, 2019

Such telltales of a feminist reading are not merely opportune; they are accurate to Shaw’s intent.

From New York Times ● Apr. 19, 2018

Of course, I vouchsafed him no answer, unless he found it in my eyes, which have ever been telltales.

From The House by the Lock by A. M. (Alice Muriel) Williamson