hasn't eaten anything
Tom non ha mangiato niente oggi.
Tom hasn't eaten anything today.
Didn't he/she eat anything?
She didn't eat anything.
Non gli è piaciuto, non ha mangiato niente!
He didn't like it, he didn't eat anything!
— È arrivata mia figlia! (2015)
Tom didn't eat anything.
They didn't eat anything yesterday.