(childish) Alternative spelling of おてて (“hand”)

strengthens the prefixed adjective or adjectival noun

one who does the previous word's action: -ist, -er / (board games) counter for moves in shogi, go, etc.

hand / handicraft, skill, talent / one who does an action: -ist, -er / handwork

hand

御中: belly, tummy, stomach, abdomen; a meal, especially of rice; cotton batting; (historical) the title of a maid working in the inner part of a samurai family's house during the Muromachi period

middle / in

middle / inside / in

middle, medium / average; neither good nor poor / during; being in the process of doing / second volume of a three volume set

being in the process of doing