Meanings
How to pronounce "big deal":
AU
Something very important or difficult; a matter of great concern; a considerable feat or achievement.
Example: "It's a big deal to him to get this promotion."
Example: "It's no big deal if you don't finish it today."
Example: "Why do you always have to make such a big deal of tiny punctuation errors?"
Someone very important; a VIP.
Example: "She's a big deal in music in Spain."
Indicates that something is not important or impressive; so what.
Example: "He can run a mile in six minutes? Big deal! Some people can do it in four."
Example: "So you beat the worst team in the league. Big deal, call the TV crews."
Example Sentences
1
So what if he won the spelling bee? It's not a big deal.
2
I don't understand why everyone is making such a big deal about her new hairstyle.
3
I forgot my homework at home, but it's not a big deal since it's just one assignment.
4
He lost the game, but it's not a big deal; there will be more opportunities.
5
Yes, I broke a plate, but it's not a big deal. It was old and chipped anyway.