This is the 2650th most frequent Swedish word.
sjukt
"Sjukt" in Swedish means "sick" or "ill" but can also mean "crazy" or "extremely" in slang.
In this sentence, 'sjukt' is used as an intensifier to emphasize the extreme coldness, translating to 'insanely' in English.
Det är sjukt kallt idag.
It is insanely cold today.
Here, 'sjukt' functions as an adverb intensifying the emotion of happiness, similar to saying 'insanely happy' in English.
Jag känner mig sjukt glad över att höra de nyheterna.
I feel insanely happy to hear that news.
In this example, 'sjukt' emphasizes the exceptional degree of talent that the subject possesses, again functioning as an intensifier.