Buongiorno! In current times, disinterested is used mostly to say "not biased," while uninterested simply means "not interested." Fun fact! A longer time ago when these words were first introduced their meanings were reversed. Disinterested originally meant "lacking interest," and uninterested was used to say "unbiased." On a seperate note, biased roughly translates to pregiudizio in case you are not familiar with the word. source: https://www.merriam-webster.com/grammar/uninterested-or-disinterested#:~:text=In%20today's%20usage%2C%20disinterested%20most,and%20uninterested%20meaning%20%22unbiased.%22