(idiomatic) go straight, quit a shady business, wash one's hands of some work or lifestyle which is less than respectable / (idiomatic, neologism) quit a business (regardless of its respectability)

to use one's head

soap

soap dish

bar soap

liquid soap

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

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