prime
cut someone off (or down) in their prime bring someone's life or career to an abrupt end while they are at the peak of their abilities.
prime the pump stimulate or support the growth or success of something, especially by supplying it with money.
☞ This phrase is used literally of a mechanical pump into which a small quantity of water needs to be poured before it can begin to function.
1977Tom SharpeThe Great Pursuit Significance is all … Prime the pump with meaningful hogwash.