This is the 91st most frequent Czech word.
této
The Czech word "této" means "this" or "to this" in feminine dative or locative singular form.
The word 'této' here is in the dative case, indicating 'to this book'.
Této knize rozumím velmi dobře.
I understand this book very well.
The word 'této' here is in the locative case, referring to 'in this situation'.
Vůbec jsem nečekal takový vývoj v této situaci.
I did not expect such a development in this situation at all.
The word 'této' here is in the dative case, meaning 'to this idea'.