(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

(game of Go) liberty

hyperventilation; hyperpnea

(idiomatic) having minds that are in sync, two heart beat as one

(anatomy) a muscle of respiration

dyspnea, labored breathing