What Aramaic word for "Father" did Jesus use when praying in Gethsemane in Mark 14?

Answer: Abba

Jesus prayed, "Abba, Father, all things are possible for You. Take this cup from Me. Yet not what I will, but what You will."

“Going a little farther, He fell to the ground and prayed that, if it were possible, the hour would pass from Him. “Abba, Father,” He said, “all things are possible for You. Take this cup from Me. Yet not what I will, but what You will.””— Mark 14:35-36 (BSB)