excuse me
US /ɪkˈskjuːz miː/
UK /ɪkˈskjuːz miː/

1.
used as a polite apology in various contexts, such as when interrupting someone, asking someone to move, or when you accidentally bump into someone
:
•
Excuse me, could I just say something?
•
Excuse me, you're standing on my foot.
2.
used to express mild indignation or disagreement
:
•
Excuse me, I think you're mistaken.
•
Excuse me, but that's not what I said.