si erano

they had (done something)

→ si
phrase Rare #40,989
they had (done something) Used with a past participle to form the pluperfect of reflexive verbs; the exact English translation depends on the verb.
IT: Si erano svegliati presto.
EN: They had woken up early.

Neanche i giapponesi si erano mai comportati così.

Not even the Japanese had ever behaved like this.

— Addio mia concubina (1993)

I miei indumenti da maltempo si erano asciugati.

My wet-weather clothes had dried.

No, non potevano competere con me, ma si erano già trasformati in mostri.

No, they were no match for me, but they had already turned into monsters.

— Il castello errante di Howl (2004)

Mary morì dopo che si erano lasciati.

Mary died after they broke up.

— Return to Silent Hill (2026)

Probabilmente stavano leggendo o si erano addormentati.

They were probably reading or falling asleep.

— Die My Love (2025)