This is the 324th most frequent Estonian word.
keda
"Whom" (used as the object form of "who").
'Keda' is applied here in a question to identify the direct object receiving the action.
Keda sa tahad aidata?
Whom do you want to help?
'Keda' is used in an indirect question to refer to the direct object in the accusative case.
Ma ei tea, keda ta ootab.
I don't know whom he/she is waiting for.
'Keda' is used as an interrogative pronoun in the accusative case to ask about a direct object in the question.