There are several synonyms for the phrase "walling in." Some of the common synonyms include barricading, confining, enclosing, trapping, enclosing, and hemming in. These words suggest the idea of limiting someone's freedom or movement by surrounding them. Walling in can also be used metaphorically to refer to emotional or mental barriers that prevent individuals from making progress or achieving their goals. In such a context, synonyms such as blockading, hindering, obstructing, and isolating can be used. It is crucial to select the appropriate synonym based on the context or situation to convey the intended meaning clearly.