adj
bigtime
adj
1
Important, prominent, or operating on a large scale.
"She went from local gigs to being a bigtime recording artist."
adv
1
To a considerable or noticeable degree.
"He messed up bigtime when he forgot the client's name."
How to Use Bigtime
Learner’s notesIn plain EnglishEither "major/successful" (adjective) or "seriously, a lot" (adverb, informal).
When to use it
Very informal, especially the adverb use ("messed up bigtime").
Common pairings
bigtime player
screw up bigtime
Word Forms
more bigtime comparative, most bigtime superlative
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She went from local gigs to being a _____ recording artist.
Etymology
A compound of big and time, originally show-business slang for the top level of a profession.