The phrase "bring naught" means to have no effect or to be useless. Some synonyms of this phrase include "futile," "useless," "ineffectual," "barren," "pointless," and "fruitless." However, there are several antonyms of "bring naught" that express its opposite meaning, such as "effective," "useful," "fruitful," "rewarding," "successful," and "productive." Using these antonyms in a sentence may help create a more positive and hopeful tone, such as "Your hard work will bring fruitful results in the future" or "The new strategies implemented by the company were effective in achieving its goals.