Nonplus

The hiker was nonplus when she reached a dead-end on the trail.

The patient was nonplus by the complicated medical diagnosis.

The child was nonplus by the complex math problem.

She stood in front of the art piece, nonplus at its beauty.

The interviewee was nonplus by the unexpected question.

The complicated math problem left the student in a nonplus.

The foreign language conversation left me in a nonplus.

The unexpected twist in the plot left the readers in a nonplus.

The strange behavior of her friend left her in a nonplus.

The foreign language left the traveler in a nonplus.

The sudden plot twist left the audience in a nonplus.