When it comes to antonyms for the word "bionic," several options come to mind. Firstly, "natural" serves as a direct opposite as bionic relates to the integration of technology with living organisms, and natural refers to the state of being untouched by artificial means. Similarly, "organic" can be used as a synonym for natural and an antonym for bionic. "Manual" or "mechanically derived" could be considered an antonym regarding the origin of bionic parts, which are usually produced using machining operations. "Static" is another suitable antonym as bionic parts seek to mimic the functional abilities of organic systems, while static implies a lack or absence of movement or action.