"To fro" is commonly used in speech and writing to describe the act of moving back and forth between two points or positions. However, there are various alternatives to this phrase that can be used to provide a more nuanced description of such movements. Synonyms for "to fro" include "back and forth," "to and fro," "in and out," "from side to side," "up and down," "forth and back," and "backward and forward." These phrases help to add variety and clarity to written or spoken language, making it more engaging and expressive. So whether you're writing a story or describing movement in a scientific report, consider using synonyms for "to fro" to enhance your language.