This is the 11th most frequent Estonian word.
kes
"Kes" in Estonian means "who."
In this sentence, 'kes' is used as an interrogative pronoun to ask about someone's identity.
Kes sa oled?
Who are you?
In this example, 'kes' is used as an interrogative pronoun to inquire about a choice or the identity of a person.
Kes on kõige kiirem jooksja?
Who is the fastest runner?
Here, 'kes' functions as a relative pronoun, connecting the clause to describe 'someone'.