This is the 48th most frequent Hungarian word.
annak
"Annak" means "of that" or "to that" in English, depending on the context.
Indicates possession of the object 'book' (könyv) as a definite article in a genitival construction.
Annak a könyvnek a borítója gyönyörű.
The cover of that book is beautiful.
Refers to a previously mentioned fact or event which brings joy.
Annak örülök, hogy eljöttél.
I am glad for the fact that you came.
Used to indicate the exam (vizsga) being referenced in a genitive context.