big chance; big opportunity
A straightforward loanword from English, used in Japanese to emphasize a significant or rare opportunity.
これはビッグチャンスだ。逃すな。
This is a big chance. Don't miss it.
彼はビッグチャンスをものにした。
He seized the big opportunity.
Variant with interpunct; less common but still seen.
Loanword from English 'big chance'.