Rachel: Oh wow. Are you in trouble.
Monica: Big time!
I might not be right about this, but it would seem like “big time” was more popular in the 90’s than it is today.
It means “very much”.
But it might not be the best choice for a synonyms to use. Here are other more natural, modern ways Monica could have answered “Yes, very much”:
You better believe it.
Don’t I know it!
I know, right?
[accordion][accordion_block title=”Other uses of ‘big time'”]Used to describe success in Hollywood show business. “After years of struggle as an actor in a small theater in Ohio, she finally hit the big time in California.” [/accordion_block][/accordion]