Lei disturbarle

to disturb them (feminine), to disturb you (formal)

→ disturbare
disturb disturb + ar Infinitive + le her/it or them (direct object pronoun)
verb · 2nd-person formal Rare #45,784
to disturb them (feminine), to disturb you (formal) The attached pronoun le can mean “them” (feminine plural) or formal “you.”
IT: Non voglio disturbarle.
EN: I don't want to disturb them.
Conjugation of disturbare

Cerca di non disturbarle.

Try not to disturb them.

Cerchi di non disturbarle.

Try not to disturb them.

Cercate di non disturbarle.

Try not to disturb them.

Non volevo disturbarle.

I didn't mean to disturb you.