This is the 13350th most frequent Swedish word.
underbar
Wonderful.
Here, 'underbar' is used to describe the feeling or quality of the day in a positive and complimentary manner.
Vilken underbar dag vi har haft tillsammans.
What a wonderful day we have had together.
In this sentence, 'underbar' emphasizes the delightfulness and beauty of her voice.
Hennes underbara röst fyllde rummet med musik.
Her wonderful voice filled the room with music.
Here, 'underbart' is used to express an individual's positive opinion or joy about an activity.