The phrase "cooped up" generally refers to feeling confined, restricted or trapped in a space. The antonyms for this phrase would be freedom, liberation, and release. This means to have the liberty to move about freely, bounds-free and without restriction. These antonyms convey a sense of ease, comfort and openness, unlike the feelings of claustrophobia associated with being "cooped up". To experience the antonyms of being "cooped up", one may venture outside, engage in physical activities, socialise with others, or travel to new destinations. These activities can help one to feel untrapped and experience a sense of liberation.