This is the 166th most frequent Slovak word.
ktorým
"By which" or "through which."
Here, 'ktorým' serves as a relative pronoun connecting the clause and representing the preposition 'na' along with the required instrumental case.
Projekt, na ktorým sme pracovali, bol úspešný.
The project we worked on was successful.
In this example, 'ktorým' acts as a relative pronoun indicating an instrumental case agreed with the preposition 's', specifying with whom the action took place.
Človek, s ktorým som hovoril, bol veľmi sympatický.
The person I talked to was very nice.
In this sentence, 'ktorým' is used as a relative pronoun to refer to an indirect object in the instrumental case, matching the grammatical needs of the verb.