"Form a wedge in" is a commonly used phrase in the English language, but it can be useful to have synonyms for this expression to better convey the desired meaning. Some synonyms for "form a wedge in" include "wedge in," "drive a wedge into," "insert," "embed," and "plant." Each of these phrases can convey both the physical action of creating a wedge or blockage, as well as the metaphorical sense of creating a division or separation between different groups or ideas. Choosing the right synonym for the context can help to more effectively communicate the intended message.