nonplussed

"It's hard for me to believe that targets and timing and weapons would not have been classified," he told Gabbard, who remained nonplussed.

Once Short was gone, Fallon said, “You never kiss me like that anymore,” to a nonplussed Michaels.

I was further nonplussed by a bizarre incident at a large end-of-summer meet.

Though his demise was not exactly surprising — Durst was 78 and had been in failing health for years — it still left him nonplussed, Jarecki said.

For my character, she was at the beginning so nonplussed every time he would flirt with me, I'd be like, "What? What are you talking about?"