The phrase "bi tumens" is not a typical word that can be found in any regular English dictionary. However, we can attempt to identify synonyms that might fit the context and meaning of the word. One possible synonym could be "dual-sided," which indicates that there are two sides or aspects to something. Another option might be "bilateral," which refers to things that involve two sides or parties. Other words that could potentially be used as synonyms for "bi tumens" include "dualistic," "dichotomous," or "bipartisan." Ultimately, the most appropriate synonym will depend on the specific context in which the phrase is being used.