flummoxed

adj

1. Confused, perplexed or flustered.

   “He's good at what he knows, but he gets completely flummoxed when new problems arise.”

   “‘Itʼs amazing, these bosses call all the shots but are flummoxed by the smallest technological advances.’”

   ““What would you have done?” he demanded more than once of Ms. Le Pen, without ever getting a direct response. She did not seem to have one and looked flummoxed.”

verb

1. (form-of, participle, past)simple past and past participle of flummox