This is the 17599th most frequent Polish word.
zdziwieniem
"Zdziwieniem" means "astonishment" or "surprise" in English.
The word 'zdziwieniem' (with surprise) here refers to the manner of looking, expressing an emotional reaction.
Zdziwieniem spojrzałem na wynik egzaminu.
I looked at the exam result with surprise.
The word 'zdziwienie' (surprise) acts as a noun indicating the emotional state experienced by the subject.
Jej zdziwienie było widoczne na twarzy, gdy zobaczyła niespodziankę.
Her surprise was visible on her face when she saw the surprise.
The word 'zdziwieniem' (surprise) is used as part of the subject of the sentence, indicating what was surprising to the narrator.