There are several synonyms for the phrase "capable of movement." Some of the common synonyms include mobile, agile, nimble, and dynamic. These terms are often used to describe living organisms that can move around freely. Other similar phrases that can be used include "able to move," "capable of motion," and "possessing mobility." It is important to note that the use of synonyms can help to add variety to writing and language usage. By using different words to describe the same concept, one can create a more engaging and dynamic piece of writing while avoiding repetition and monotony.