This is the 722nd most frequent Icelandic word.
ótrúlega
Incredibly.
In this sentence, "ótrúlega" is used as an adverb modifying the adjective "hæfileikarík" (talented) to intensify the meaning, signifying a high degree of talent.
Hún er ótrúlega hæfileikarík.
She is incredibly talented.
In this example, "ótrúlega" modifies "skemmtilegt" (enjoyable) to stress how exceptionally enjoyable the evening was.
Við höfðum ótrúlega skemmtilegt kvöld.
We had an unbelievably enjoyable evening.
Here, "ótrúlega" functions as an adverb intensifying the adjective "fallegt" (beautiful), emphasizing the extraordinary beauty of the sunset.