big-time

[big-time] {adj.} Belonging to the top group; of the leading class; important.

Jean won a talent contest in her home town, and only a year later she began dancing on big-time television.

Bob practices boxing in the gym every day; he wants to become a big time boxer.

- Often used in the phrase "big-time operator".

Just because Bill has a new football uniform he thinks he is a big-time operator.

Compare: SHOW OFF. Contrast: SMALL-TIME.