0 the state of being completely sure about something -- certezza
1 a fact that you are completely sure about -- certezza
2 something which cannot be doubted -- certezza, cosa certa
It’s a certainty that he will win.
3 freedom from doubt -- sicurezza
Is there any certainty of success?
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Possiamo completarlo passo dopo passo, indipendentemente dalla lunghezza della strada, e non può essere completato, per quanto breve sia la strada, se non segni nemmeno la tua impronta.