This is the 724th most frequent Czech word.
se
The Czech word "se" is a reflexive pronoun used to indicate the subject performing an action on itself or to form reflexive, passive, or impersonal constructions.
Reflexive pronoun used to indicate an action performed by the subject on themselves.
Se učím češtinu každý den.
I learn Czech every day.
Reflexive pronoun used in a passive construction to indicate the state or location of the subject.
Kniha se nachází na stole.
The book is located on the table.
Reflexive pronoun used in mutual constructions to indicate reciprocal actions.