зависнуть(например, в разговоре Mikhail11); повести бровью(с отрицанием, в значении "внешне не проявить эмоций" • He didn’t blink when I asked him to speculate on Apatosaurus penis size or kept bringing up what Tyrannosaurus probably tasted like.Abysslooker)
мерцать(To flash on and off. Cursors, insertion points, menu choices, warning messages, and other displays on a computer screen that are intended to catch the eye are often made to blink. The rate of blinking in a graphical user interface can sometimes be controlled by the user)