kartr
kartṛ — doer; SB 3.5.29
kartṛ-vādāḥ — the proprietorship of such foolish agnostics; SB 8.22.20
kartṛ — and the producer (adhidaiva); SB 11.28.20
kartṛ-abhiprāye — is meant for the agent; CC Madhya 24.26