Antonyms for the phrase "go bananas" are words that suggest stability, calmness, and steady emotions. Some examples of these antonyms are: remain composed, be rational, stay moderate, keep cool, and remain level-headed. To "go bananas" means to act in a wild, irrational, and uncontrollable way, so antonyms to this phrase imply control, reason, and rationality. Using these antonyms can be helpful in situations where one needs to maintain composure or make decisions based on sound judgment. By avoiding the wild impulses associated with "going bananas," one can make more logical and sensible choices that lead to better outcomes.