Antonyms for the phrase "bring under control" include let go, release, surrender, give up, free, relinquish, lose control, and loosen one's grip. When something is not under control, it can be chaotic and unpredictable. Therefore, the opposite of bringing something under control means that there is no command, organization, or regulation. It can mean relinquishing power or letting go of the reins, allowing the situation to develop without interference. Conversely, bringing something under control or keeping it in check suggests that order has been restored or that control has been regained. While bringing something under control can be a positive step, the absence of control can also be liberating or beneficial in certain scenarios.