This is the 510th most frequent Danish word.
præcis
"Præcis" in English means "precise" or "exact."
The word "præcis" is used here as an adverb to indicate the exactness of the time she arrived.
Hun ankom præcis klokken otte.
She arrived exactly at eight o'clock.
Here, "præcis" functions as an adverb emphasizing the exact match to the speaker's hopes.
Det er præcis, hvad jeg havde håbet på.
That is exactly what I had hoped for.
In this case, "præcis" is used as an adjective to describe the accuracy of the answer provided.