Questions & Answers about Ce n'est pas grave.
Word by word:
- Ce – literally this or it/that. Here it’s a vague subject: It / That.
- n' – the first part of French negation (ne), shortened before a vowel.
- est – is (3rd person singular of être – to be).
- pas – not (the second part of negation).
- grave – serious, severe, important (in the sense of something being a big deal).
So literally: This/It is not serious, which in natural English is It’s not a big deal / It doesn’t matter / No problem.