on the nail

Britain

(Britain) immediately, without delay

Japanese Meaning

即座に / すぐに / 直ちに

When the client requested the changes, the developer implemented them on the nail.

クライアントが変更を依頼したとき、開発者はそれをすぐに実装した。

Sense（1）

(Britain) immediately, without delay

Tell me, have you a mind to anything in the Doctor's book? Speak the word, and I will help you to it upon the nail.