封口费

hush money

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

surname Feng

to confer / to grant / to bestow a title / to seal / classifier for sealed objects, esp. letters

surname Fei

to cost / to spend / fee / wasteful / expenses

to close up / to heal (of wound) / to keep one's lips sealed