verb (used with object), non·plussed or non·plused, non·plus·sing or non·plus·ing.
Origin of nonplus
Examples from the Web for nonplussed
Then he's quiet, while I, nonplussed, just stare until he adds, “The camera must never move.”Alfred Hitchcock’s Fade to Black: The Great Director’s Final Days|David Freeman|December 13, 2014|DAILY BEAST
Nonplussed, he thought for a moment, smiled, and meekly confessed, “Nothing I guess—just boxing and my family.”Vitali Klitschko Contemplates Bowing Out of the Ring and Entering Ukrainian Politics|Gordon Marino|March 26, 2013|DAILY BEAST
Pinder, 29, appears to be nonplussed, telling the website, “The shoot is meant to be fun and very tongue-in-cheek.”Catholics Pissed Over Busty Model's Topless Pics Mocking Pope|Marlow Stern|March 8, 2013|DAILY BEAST
As to why he plays mentally unfit characters so well, Shannon is nonplussed.
But the supporters of the protest movement are nonplussed by these obstacles.
When they told him they were from Bonanza, he was nonplussed.Revolution and Other Essays|Jack London
The Squire was nonplussed by the suddenness of her movement, and did not know whether to detain her or not.I, Thou, and the Other One|Amelia Edith Huddleston Barr
Nonplussed, they returned to the office, and noted the unused look of the desks and counters there.The Dorrance Domain|Carolyn Wells
Jacqueline was startled but not nonplussed; she had been hoping a miracle might occur that day.Kildares of Storm|Eleanor Mercein Kelly
He wanted to know what fouls were, and how to steal bases, and he was nonplussed by such terms as “hit-and-run.”The Young Pitcher|Zane Grey