This is the 14200th most frequent Polish word.
prezentami
"Prezentami" means "presents" or "gifts" (instrumental plural form) in English.
Here, 'prezentami' is used in the instrumental plural case, indicating the means with which they were happy.
Dzieci były bardzo szczęśliwe z prezentami, które otrzymały na święta.
The children were very happy with the gifts they received for the holidays.
'Prezentami' is in the instrumental plural, used to describe the gifts involved in the action of surprising.
Rodzice zaskoczyli nas pięknymi prezentami.
The parents surprised us with beautiful gifts.
In this sentence, 'prezentami' serves to present the instrumental case, relating the gifts enjoyed under the tree.