The phrase "begun again" can be replaced by several synonyms, giving variety and nuance to the sentence. Some alternatives are "resumed," which conveys the idea of starting again after a pause or interruption. "Recommenced" is a more formal option that suggests a deliberate act of starting over. "Restarted" and "restarted anew" both emphasize freshness and new beginnings. "Rekindled" implies a renewal of passion or interest. "Renewed" can apply to any activity or undertaking that is being restarted. By using different synonyms for "begun again," a writer can add color and texture to their prose, creating a more vivid and engaging reading experience.