This is the 9117th most frequent Swedish word.
energisk
Energetic.
Here, 'energisk' describes the person's dynamic and vigorous attitude towards work.
Hon är mycket energisk och arbetar hårt.
She is very energetic and works hard.
Here, 'energiska' modifies 'insatser' (efforts), showing the enthusiasm and vigor they contributed to the action.
Deras energiska insatser gjorde evenemanget framgångsrikt.
Their energetic efforts made the event successful.
In this sentence, 'energisk' is used to express the physical or emotional state of increased vitality.