Definitions

1. noun

a fashionable or important event, or a person who is very successful or prominent, often used humorously or ironically.

“The music festival is going to be bigtime this year.”

2. adverb

very, extremely; used humorously or ironically to emphasize the importance or extent of something.

“He’s making bigtime money from his YouTube channel.”

3. adjective

extremely successful or prominent, often used humorously or ironically.

“He’s a bigtime celebrity now.”