nonplus

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.

Leigh Rosser was similarly nonplused while describing his biggest challenge as design fabrication lead.

When was the last time you looked at the exquisite list of synonyms for the word “baffled”? They may be among the best in the English language: puzzled, nonplused, discombobulated, flummoxed, stumped, fogged, wildered, buffaloed.

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?"