This is the 13469th most frequent Swedish word.
utbrister
"Utbrister" means "exclaims" in English.
Utbrister is used here to indicate the action of suddenly declaring or expressing a strong feeling.
Han utbrister att han älskar sommaren.
He exclaims that he loves summer.
Utbrister is used in this context to describe the act of expressing an emotion, notably surprise or admiration, upon observing something.
När hon såg solnedgången utbrister hon: "Så vackert!"
When she saw the sunset she exclaimed: "So beautiful!"
Utbrister is used to denote the act of vocally expressing strong emotions, often spontaneously due to a sudden feeling.