"Pushedding wall" does not appear to be a recognized English phrase or word. Therefore, it is difficult to provide synonyms for it. It is possible that the intended word is "pushing wall," which would refer to a wall that is moving or being pushed. Synonyms for this phrase would include phrases such as "moving wall," "pressure wall," or "active wall." However, without more context or clarification, it is impossible to provide accurate synonyms for "pushedding wall".