Took action is a phrase commonly used to describe someone's decision to start doing something. However, it is possible to use other words and phrases to convey the same message. For instance, "initiated," "launched," "commenced," "executed," "undertook," "implemented," "activated," or "embraced" can all be used to describe taking action. These synonyms for "took action" can help to make your writing more interesting and engaging. Using words like these can also help to add complexity and nuance to your message, indicating the specific kind of action taken and the motivation behind it. Ultimately, using synonyms for "took action" can make your writing more polished and professional.