needful
adj
1 necessary 需要的; 必要的: promise to do what is needful 答应做必须做的事.
2 (idm 习语) do the `needful do what is required, esp by providing money for sth 做必须做的事(尤指为某事物提供金钱).
🗣️ 情景例句
you'll have it.
那你就大功告成了。
The board won't approve of the budget for this year's expenditures.