The word "un-leashed" refers to the action of releasing or setting free. Antonyms for "un-leashed" would be words that describe the opposite, such as "restrained," "restricted," "constrained," "held back," or "controlled." These words emphasize the concept of being limited or confined, rather than being free to move or act as one wishes. Examples of opposite phrases include "leashed," "kept under control," "held in check," or "coerced." These antonyms are often used to describe a situation where one's actions are restricted or limited due to external factors such as rules, laws or regulations, or internal factors such as fear or insecurity.