lui trattasse

were about, concerned, treated

→ trattare
tratt to treat + asse Imperfect subjunctive, 3rd person singular
verb · 3rd-person singular, imperfect tense Rare #37,351
were about, concerned In the construction “si trattasse di,” it means that something was about or concerned something.
IT: Pensavo che si trattasse di un errore.
EN: I thought it was a mistake.
treated
IT: Era importante che trattasse tutti con rispetto.
EN: It was important that she treat everyone with respect.
Conjugation of trattare
Subjunctive imperfect
SingularPlural
Third trattasse —

All'inizio Ego pensò si trattasse di uno scherzo.

At first, Ego thought it was a joke.

— Ratatouille (2007)

Se si trattasse di me, metterebbe tutti contro il muro.

If it were me, it would put everyone against the wall.

— Il conformista (1971)

Sembrava che Sami trattasse Layla con rispetto.

Sami seemed to treat Layla with respect.

Signore, dicono che si trattasse di uno spirito.

Sir, they say it was a spirit.

— Young Detective Dee - Il risveglio del drago marino (2013)

E se si trattasse del contatto che abbiamo tanto atteso?

What if this is the contact we've been waiting for?

— Solaris (1972)