dimmelo

compound-of

direの二人称単数（tu）命令形dìと、me（miの接続形）とloの複合語

English Meaning

compound of dì, the second-person singular (tu) imperative form of dire, with me (the conjunctive variant of mi) and lo

Quando hai deciso, dimmelo immediatamente così possiamo iniziare i preparativi per la festa.

決めたら、すぐに教えてください。そうすればパーティーの準備を始めることができます。

When you have decided, tell me immediately so that we can start the preparations for the party.