"Brought up code" can have several antonyms, depending on what aspect of the term is being focused on. In the context of programming, the antonyms could be "degraded code" or "inferior code," indicating code that has not been improved or optimized. In a social or cultural context, the antonyms could be "ignored norms" or "counter-culture," indicating a disregard for established codes of conduct. Alternatively, in a personal development context, the antonyms could be "stuck in old habits" or "resistant to change," indicating a reluctance to adopt new habits or improve oneself. Ultimately, the antonyms of "brought up code" would depend on the specific context in which the term is being used.