B1
someone or something that is better than any other
Dictionary examples:
My grandma claims she's the best at texting. She types with her nose! (0.0)
My dad thinks he's the best at jokes. We just laugh to be polite! (0.0)
In the chocolate eating contest, I'm always the best. My stomach is unbeatable! (0.0)
Chris and I are the best of friends. (7.6)
I like all of Hitchcock's films, but I think "Notorious" is the best. (53.5)