The phrase "was action" describes an event or occurrence that took place. Synonyms for this phrase may include "took place," "happened," "occurred," "transpired," "unfolded," or "proceeded." These phrases can be used in a variety of contexts, from describing a particular event or incident to providing an account of a larger series of actions. Choosing the appropriate synonym depends on the tone and context of the writing, as well as the specific details of the event being described. Whatever the context, using a variety of synonyms can help to keep writing fresh and engaging while avoiding repetition.