big deal
Pronunciation:
noun
Definitions
Something very important or difficult, or of great concern; considerable feat or achievement.
Example: It's a big deal to him to get this promotion.
Someone very important; a VIP.
Example: Don't you know I'm a real big deal around here?
interjection
Definitions
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.