Bringing to naught is a phrase that means to ruin, destroy or make ineffective. Antonyms for this phrase would be to create, establish or make effective. Other antonyms might include to build, restore, repair, fix or revitalize. Bringing to naught often involves the idea of undermining a plan or goal, so antonyms might also include to support, encourage or promote. To bring to naught is often associated with negative outcomes or consequences, so antonyms may also include ideas of positivity, such as to uplift or inspire. Ultimately, the antonym for bringing to naught will depend on the context in which it is used.