落ち着いたら

once you calm down, when you settle down

→ 落ち着く
落ち着い calm down, settle down + Past tense + Conditional
verb · conditional Rare #38,651
once you calm down, when you settle down
JA: 落ち着いたら、もう一度話しましょう。
EN: Once you calm down, let's talk again.
Conjugation of 落ち着く
Conditional
落ち着け落ち着いたら

あなたが落ち着いたら電話をしてください

Please call me when you’ve calmed down.

落ち着いたら話して

Talk to me when you've calmed down.

— サスペリア (1977)

よく考えてシモン落ち着いたらまた話そう

Let's think it over carefully and talk again once Simon has calmed down.

— 灼熱の魂 (2010)

落ち着いたら電話してください

Please call me when things have settled down.