The phrase "backward forward" can be replaced with several synonyms to add variety to one's writing. Some of the synonyms include "back and forth," "to and fro," "repeatedly," "alternatingly," "in turn," and "in rotation." These phrases convey the idea of movement or action being carried out in opposite directions. Additionally, "backward forward" can be replaced with words that denote indecisiveness, such as "haphazardly," "inconsistently," or "erratically." Context plays a critical role in determining the optimal synonym, but it is always useful to have a wide range of descriptive words on hand to accurately convey the intended meaning.