What does Certissimo mean in English?

"Certissimo" is an Italian word, and it means "absolutely certain" or "most certainly" in English. It is a more emphatic and forceful way of saying "certain" or "sure."

Here are some examples:

* "Certissimo, I will be there!" (Absolutely certain, I will be there!)

* "It is certissimo that the sun will rise tomorrow." (It is most certain that the sun will rise tomorrow.)

It's a word that adds emphasis and confidence to a statement.