stare icily

The dancers, dressed in outrageous outfits, wave their hands languorously in time with the music, suck in their cheeks, stare icily into space and strut as if they were high-fashion models on the runways.

His lectures on literature were polished performances, in which Erskine paused only to chuckle before dropping one of his epigrams, or to stare icily at some latecomer making his way to a seat.