(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

to explore someone else's opinion, to sound out

(idiomatic) to fire up, to psych up, to motivate

(idiomatic) to keep in mind

(for manuscript) to correct; to modify

to support; to assist or approve