This is the 19th most frequent Hungarian word.
olyan
"Such" or "like that."
Olyan is used to intensify the adjective 'quickly', meaning 'so'.
Az ételét olyan gyorsan elfogyasztotta, hogy észre sem vettük.
He ate his food so quickly that we didn't even notice.
Olyan establishes a comparison, meaning 'as'.
Ez a szoba olyan szép, mint a másik.
This room is as beautiful as the other.
Olyan describes an indefinite quality or example, here meaning 'a kind' or 'a type'.