"At elbows" is typically used to describe people who are close or in close proximity to each other. Antonyms for this phrase could include "apart," "distant," "detached," "disconnected," and "separated." These terms denote a sense of distance or separation between individuals, rather than the closeness that "at elbows" suggests. These antonyms could be useful in situations where it is important to emphasize the need for social distancing or personal space. For example, during the ongoing COVID-19 pandemic, it is important to remind people to keep their distance rather than congregate "at elbows.