lo lamentarás

you'll regret it

→ lo
phrase Rare #39,784
you'll regret it “Lo” refers to something already mentioned or understood from context.
SP: Si no estudias, lo lamentarás.
EN: If you don't study, you'll regret it.

Si mientes, lo lamentarás.

If you lie, you will regret it.

— Yojimbo (1961)

No lo lamentarás.

You won't regret it.

No malgastes tu juventud, si no, lo lamentarás más tarde.

Don't waste your youth, or you'll regret it later.

Un día lo lamentarás.

One day you'll regret it.

¡Y no insultes a los Soubeyran porque lo lamentarás!

And don't insult the Soubeyrans, or you'll regret it!

— Jean de Florette (1986)

Si no vienes, lo lamentarás.

If you don't come, you'll regret it.

— Parásitos (2019)

Llegará el día en que lo lamentarás.

The day will come when you will regret it.

Llegará la hora en que lo lamentarás.

The time will come when you will regret it.