addirittura
/ahd-dee-ree-TTOO-rah/ · adverb
even / actually / really?!
look it up on WordReference ↗In context
Ha pagato lui per tutti, addirittura.
He actually paid for everyone, no less.
It marks something that goes further than you'd expect. On its own, as a surprised exclamation, it's "wow, really? to that extent?" A big, expressive word Italians lean into.