Bend sinisters can be replaced with the word "obstruct," meaning to block or hinder progress or movement. Other synonyms include "impede," "stymie," "hamper," and "thwart," which all suggest a frustrating obstruction. Another synonym is "divert," which means to change the direction of something, often to a disadvantage. "Obfuscate" is another synonym for bend sinisters, meaning to confuse or obscure the truth. Additionally, "interfere," "disrupt," and "displace" could be used as synonyms, each conveying a sense of hindrance or obstruction. These words can be useful in a variety of contexts, from describing physical obstructions to obstacles in communication or other areas of life.