The phrase "doeth to death" refers to causing someone's death or killing them. Therefore, the antonyms for this phrase would be words related to preserving life or keeping someone alive. Some of the antonyms for "doeth to death" could be "preserve", "protect", "save", "spare", "heal", or "rescue". These words convey the opposite meaning of causing harm or death, and instead, focus on keeping someone alive and healthy. Using antonyms for "doeth to death" in writing can help create a more nuanced and diverse vocabulary, allowing for a wider range of expression and a more accurate representation of different ideas and concepts.