The phrase "brings naught" implies that an action or event produces no positive outcome, and its antonyms would indicate a successful or positive result. Synonyms for naught are failure, zero, void, and nothingness, and antonyms could include accomplishment, victory, success, gain, or triumph. So, if we say that someone's actions bring naught, then the opposite could be that their actions yield fruit or produce benefits. It's important to remember that the opposite of negativity is not positivity, but rather a positive outcome. So, when someone's actions bring naught, there are still many positive possibilities for what could happen next.