silver bullet
noun /ˌsɪlvə ˈbʊlɪt/
/ˌsɪlvər ˈbʊlɪt/
(also magic bullet)
[usually singular]- a fast and effective solution to a serious problem
- Having a mentor is exciting but it's not a silver bullet for success.
- There is no silver bullet to address growing inequality in the population.