The phrase "wall out" can mean to exclude or shut someone out. There are many synonyms for this phrase, including "shut out," "ostracize," "alienate," "bar," "banish," "segregate," "isolate," and "exclude." Each of these words connotes a sense of being separated or kept apart from others, and can have negative or positive connotations depending on the context in which they are used. For instance, "ostracize" is generally viewed as negative, suggesting a deliberate attempt to exclude someone from a social group, while "segregate" can have both positive and negative connotations depending on whether it is used to describe racial or other forms of division.