The phrase "take into custody" refers to the act of detaining or arresting someone. However, there are many synonyms that can be used to convey a similar meaning. Some of the common alternatives to the phrase include "apprehend," "arrest," "detain," "seize," "capture," and "imprison." Each of these synonyms carries a slightly different connotation, depending on the context in which they are used. For example, "apprehend" may imply a quick and sudden capture, while "imprison" suggests a longer-term detention. By using different synonyms for "take into custody," writers can vary their language and impart a unique tone to their work.